Smc Doc1003077 Air Cooled Thermo-con User Manual

DOC1003077
Operation Manual
Air Cooled Thermo-con (Compact type)
HEF Series

Read Before Using

Thank you for purchasing SMC’s Thermo-con (hereinafter referred to as the “product”). This “Operation Manual” (hereinafter referred to as “this manual”) briefly explains the essential safety instruction procedures to start and stop the product and reset its alarms. Read this manual before using.

Safety Instructions

This manual contains essential information for the protection of users and others from possible injury and/or equipment damage.

• Read this manual before using the product, to ensure correct handling, and read the manuals of related apparatus before use.
• Keep this manual in a safe place for future reference.
• These instructions indicate the level of potential hazard by label of “Caution”, “Warning” or “Danger”, followed by important safety information which must be  carefully followed.
• To ensure safety of personnel and equipment the safety instructions in this manual and the product catalogue must be observed, along with other relevant safety practices.

	Caution	If instructions are not followed there is a possibility of injury or equipment damage.
	Warning	If instructions are not followed there is a possibility of serious injury or loss of life.
	Danger	In extreme conditions, there is a possibility of serious injury or loss of life.

• This manual provides the following symbols in addition to “Danger”, “Warning”, and “Caution” to present warning details in an easy-to- understand manner.

	This symbol warns you of potential electrical shock.
	This symbol warns you of potential burns.

Danger

• During operation or maintenance of the product, do not disable the interlock function of any device. Otherwise unexpected personnel injury or damage to the product  may occur.
• When turning on/off the power observe the procedure. Otherwise unexpected malfunction or danger may occur.
• When maintaining, cleaning or in case of emergency, turn off the power source.
• After identifying a problem be sure to check the cause and take necessary countermeasures before turning on the power.
• The product is operated at high voltage.

Warning

• The compatibility of equipment is the responsibility of the person who designs the system or decides its specifications.
  Since the products specified here can be used in various operating conditions, their compatibility with the specific system must be based on specifications or after analysis  and/or tests to meet specific requirements.
• Only trained personnel should handle or operate the product.
  Transportation, installation and maintenance of the product can be dangerous and should be done by persons who have full knowledge and experience on the product  and system. Cover panels of the product should be opened only by qualified service technicians or qualified personnel.
• Do not modify or reconstruct the unit.
• Do not service machinery/equipment or attempt to remove components until safety is confirmed.

Safety Instructions Continued

1. Inspection and maintenance of machinery/equipment should only be performed after confirmation of safe locked-out positions.
2.  When equipment is to be removed, confirm the safety process as mentioned above. Switch off electrical supplies and ensure any high temperature parts have cooled to  ambient temperature.
3. Before machinery/equipment is re-started, ensure all safety measures are taken so the product and system can be started in a safe manner.
4. Do not use this product outdoor (indoor use).
   Do not use this product outside of the specifications. Contact SMC if it is to be used in any of the following conditions.
   1. Conditions and environments beyond the given specifications.
   2. Installations in conjunction with atomic energy, railway, air navigation, vehicles, medical equipment, food and beverage, recreation equipment, emergency stop  circuits, press applications, or safety equipment.
      If abnormal conditions occur, such as abnormal noise or smoke, or water leakage, take the following actions.
      1. Shut down power.
      2. Contact an authorised SMC dealer for repair.

Caution

• After shutting down the power supply, ensure a time interval at least 3sec between ON and OFF. Restarting the product within that interval may cause it to malfunction.
• Do not use devices that generate electromagnetic radiation such as cellular phones near the product. There is a possibility that this can cause the product to malfunction.
• This unit has several interlock functions, which activate when a dangerous operation or condition occurs to stop the product and make it safe. This is a function to  protect personnel and restrict operation that may cause damage to the product or facility, and to remove dangers related to safety.
• When dispose the product, contact an industrial waste disposal company for disposal of the product. To minimize the risk, drain the fluid from the product when it is  scrapped. If the fluid is left inside, an accident and amage can result during transportation.
• When the circulating fluid temperature is low, do not operate it at a low flow rate. It may freeze circulating fluid in the product when used at low temperature and low  flow rate.
• This unit does not use parts that meet the SCCR specifications.

Specifications

3.1 General Description and Intended Use
This product uses a built in pump to circulate liquid (water or 20% EG) at a constant temperature, controlled by Thermo-Electric (Peltier) Modules. This circulating fluid  cools parts of the customer’s machine that generates heat.
3.2 General Specifications

3.3 Performance Charts
Values on the performance charts are not guaranteed values but representative values. Allow margins for safety when selecting the model
3.3.1 Cooling Capacity

*Cooling capacity decrease approx. 20W when high pressure pump option selected
3.3.2 Heating Capacity

*Heating capacity increase approx. 10W when high pressure pump option selected

3.3.3 Pump Capacity

3.4 Connector Specifications

Description	No.	Signal	Style and Part No.
Power supply connector	1	DC24V+	J.S.T. Mfg. JFA connector J4000 series SC02B-J42SK-GHXR
	2	DC24V-
Alarm, RUN/STOP, Communication connector Note: Always use shielded cable connected to this connector.	1	RS-485 BUS +	D-sub 9 pin (socket type) Fixed screw: M2.6
	2	RS-232C RD
	3	RS-232C SD
	4	RUN/STOP signal Input
	5	SG
	6	Output Cutoff Alarm (Open During Alarm)
	7	Output Cutoff Alarm Common
	8	RUN/STOP signal Input
	9	RS-485 BUS –

3.5 Model number of product 
The product can be ordered with the model number configured as shown below.

3.6 Product serial number code
The production serial number code printed on the label indicates the year and month of production as per the following table:

Special Features

• Offset function This function controls the temperature slide by an offset value from set point temperature. When the circulating fluid travels to the target object, a certain deviation occurs between the temperature just before the object and the set temperature of the product due to the influence of ambient temperature on the piping. In this case, if the deviation is input as the offset value, the temperature of the circulating fluid just before the object can match with the setting value. For example, if 0.1 °C is set here, the actual reference temperature for control is lower than the indicated SV by 0.1 °C.
• Setting value memory function Even if the power is turned off the set values are saved and will be restored at power on.
• Output shut off alarm function The product has a self-check function that can detect faults with the product and interrupts the output to the thermo modules, pump and fan, stopping operation. This function gives an alarm if a critical error happens, the display shows ALARM. At the same time, the alarm output connector gives an output through a relay contact. This alarm cannot be removed unless the power is cycled. When the power is being cycled leave at least 3 seconds between turning the power off and turning the power back on.
• Fan speed control function Fan speed is controlled automatically in accordance with the heat load.
• RUN/STOP signal function by remote A contact input between pins 4 and 8 of the connector (Alarm, RUN/ STOP, Communication connector) can be used to RUN/STOP(RDY) the product.

Installation

5.1 Installation
Caution

• Pay special attention to the safety of all personnel when installing and transporting the product.
• Do not install the product unless the safety instructions have been read  and understood.
• Leakage from the product may damage peripheral equipment. Install a drain pan under the product to capture leakage. Furthermore, mount devices like a leak sensor on  the installed drain pan to detect leakage so that it can alert operators around the area.
  5.2 Environment 

Caution

• Do not use in an environment where the product is directly exposed to water, oil, corrosive gases, chemicals, salt water or steam.
• The product should be installed upright on a stable base.
• Do not install the product in a location where the air inlet and air outlet vents are blocked. Also do not use the product in a sealed enclosure.
• Do not use in an explosive atmosphere.
• Do not mount the product in a location where it can be exposed to prolonged sunlight. Use a protective cover.
• Do not mount the product in a location where it is subject to strong vibrations and/or shock. Check the product specifications.
• Do not use the product where it can be exposed to strong electrical or magnetic emissions.
• Do not mount the product in a location where it is exposed to noise sources (such as discharging equipment, large relay and thyristor).
• Do not mount the product in a location with an altitude of more than 2000 meters.
• Do not mount the product where it is exposed to materials such as silicone, which may generate harmful gas.
• Install the product in a location where the ambient temperature range is between 10 to 35°C and the relative humidity range is between 35 to 70%. No dew condensation is allowed on the unit.
• Do not mount the product in a location exposed to radiant heat.
• To prevent adverse effects of noise on personnel, install at least 1 meters away from users.

5.3 Piping

• Ensure that the power source and the power supply of the product is turned off (or the power plug must come off )
• Ensure the flow rate of the circulating fluid is as high as possible to maintain the temperature stability. Therefore, the length of the external piping should be minimized  and internal diameter should be as large as possible. Piping must have sufficient strength for the maximum discharge pressure of the circulating circuit.
• Likewise, if a tube is bent or multiple elbow fittings are used, the piping resistance will increase and the flow rate will decrease. If the flow rate falls, the temperature  stability will decrease.
• If installing a tank externally, only a sealed tank should be used. Do not use an open tank.

Caution

• Ensure that the INLET and OUTLET for circulating fluid is connected correctly. If any valves are used ensure that they do not restrict the flow, otherwise low flow may cause an alarm.
• When installing piping or fittings, ensure sealant material does not enter inside the port. When using seal tape, leave 1.5 to 2 threads exposed on the end of the pipe/fitting.
• Be sure to correctly tighten the fittings to the required torque(Rc1/4:12 to 14 N･m).

5.4 Wiring

• This product may use maximum current of 18A, depending on the operating conditions. Select the power source with some margins.
• Ensure that the power source and the power supply of the product is turned off before connecting the various connectors and power supply cable.
• Supply disconnecting device according to IEC60947-3 for the product must be provided in the end system.
• Do not install the disconnecting device in the place where the operation is difficult. And also the switch of the disconnecting device must comply with the direction of the switch specified by IEC60447.
• Ensure that a lock out facility is available on the power source. Ensure that an Earth Leakage Breaker with proper capacity is used. Install it above 0.6m from the floor.
• Use the dedicated power supply for this product with SELV.
• Preparation and wiring of power supply cable 1) Attach the proper connector (e.g. crimped terminal) that matches the power source to one end of accessory power supply cable. (Accessory cable: 16AWG, UL1007) 2) Connect the connector to the power source, and the product.
• Ensure that there is enough space between the power supply cable and the communication cable of the product and power cables of other equipment.
• Ensure the power supply and ground (protective earth) connections are made correctly.
• Be sure to provide the grounding (16AWG). Do not connect the ground in common with the ones for equipment that generates strong electromagnetic noise or high frequency.
• Connect the host to this unit with a twisted pair shield cable when applying communication function. When using the Communication connector, connect the circuit separated from the mains circuit by reinforced insulation.
• Ensure that external instruments connecting to this product provide the enclosure complied with UL61010-1 and use the cable which provides flame resistance (over VW-1).

5.5 Filling the product

1. Ensure that the power source and the power supply of the product are turned off (or the power plug must come off).
2. Remove the reservoir cap.
3. If using Ethylene Glycol, refer to the suppliers Material Safety Data Sheet (MSDS) and wear Personal Protective Equipment (PPE) as appropriate.
4. Fill the circulating fluid into the reservoir. Stop filling once the level of fluid reaches the “H” mark.
5. Turn on the power switch to fill the piping with the fluid, then operate RUN to start the pump.
6. When the piping is filled with the circulating fluid, the level of the reservoir decreases and low fluid level alarm arises accordingly. Then, turn off the power supply once  again.
7. Repeat the step from 4 to 6 until alarm doesn’t appear anymore.
8.  Then, replace the cap on the reservoir and tighten it securely.
9. Keep the fluid level between H and L of the level indicator

Danger

• Never touch the power switch with wet hands to avoid electrical shock.

Caution

• Do not touch the surface when the set temperature is high. Temperature of the tank and the chassis near the tank could be high.
• Fluid other than water or Ethylene Glycol (up to 20%) should not be used as circulating fluid. Using such fluid may lead to leakage or damage of the pump.
• Operation of the pump with a large amount of air left in the piping for prolonged period may damage the pump. Remove air from piping before starting operation.
• If the power switch is turned on without circulating fluid, the pump could be damaged.
• Take care not to spill water over the product when supplying water to the reservoir. When a spill is made, wipe it off immediately and only supply power after it has dried. If this procedure is neglected, it may cause damage to the product.
• If a fluid with low conductivity such as DI water is used as circulating fluid, it can cause static electricity due to friction and damage the product. Take measures to minimize the static electricity from circulating fluid.
• Do not use with flow rate of circulating fluid is zero. If the flow rate is zero, the temperature of circulating fluid cannot be detected and might be increased or decreased. The pump might be broken as well.

Operation

6.1 Power Up
When power is turned on, “HELLO” is indicated on display panel for approx.
4 seconds.
6.2 Operation
The product starts up in the RDY mode (control stop) after the power is turned on, and by pressing the RUN/STOP key to put it in the RUN mode (control run), the pump,  fan, and heat exchanger start operating and temperature control begins. The display shows the following information. (If the operation start status setting in the  control setting mode is set to “2”, operation can be started immediately after power-on.)

6.3 Details of Controller/Display

6.4 Settings
Controller has two modes, Operation mode and Setting mode. Each mode has the following contents.

Operation Mode: Initial mode
Used in normal operation (e.g. setting of target temperature/offset.)
Setting Mode: Press and hold [MODE] key for 2 seconds.
Used at maintenance and initial setting for controller/PID/Communication.
Setting of functions and data in each mode

1. Press [MODE] key in each mode to select the required function.
2. Increase or decrease data with the [▲] or [▼] key

• Each press of the [▲] key increases the data by one count.
• Each press of the [▼] key decreases the data by one count.
• Holding the [▲] or [▼] key accelerates the increase or decrease.

Setting Mode
<SET1> Control setting mode [MODE] key

	Control Mode
	Heating proportional band
	Integral time
	Derivative time
	Heating proportional cycle
	ARW
	Cooling proportional band
	Cooling proportional cycle
	Fan Control Setting
	High Temp. Cutoff
	Low Temp. Cutoff
	Operation start status

<SET2>
Communication setting mode [MODE] key

	Communication standard RS-232C / RS-485
	Communication parameter
	Communication speed
	Communication address
	Response delay time

6.4.1 Operation Mode
When the power supply switch is turned on, the product is in operation mode. The target temperature is shown as well as the current measured temperature. Each presses of  the [MODE] key changes the operation mode display as follows.

No.	Modes	Function	Setting range (Min. increment)	Default
1	Target Temp./ Measured Temp. Indication and setting	Sets target temperature Set with [▲] or [▼] key	10.0 to 60.0°C (0.1°C)	25.0
		Indicates current temperature on PV and target temperature on SV
2	Offset Setting	Sets the offset value of the PV. Set with [▲] or [▼] key	-9.9 to 9.9°C (0.1°C)	0
		Ex. If set to 0.5, the temperature is controlled to a value that is 0.5oC lower than displayed temperature (PV).
3	Heating output indicator	Indicate the heating output ratio	0.0 to 100.0%	–
4	Cooling output indicator	Indicate the cooling output ratio	0.0 to 100.0%	–

6.4.2 Setting Mode
Setting mode can be shown by pressing and holding the [MODE] key for approx. 2 sec.
Pressing the [MODE] key for approx. 2 sec again will return the setting mode to the Operation mode.
Setting mode selection is indicated with ” ” and the required setting mode can be selected by increasing or decreasing the indicated number with the [▲] or [▼] key

SET1: Control Setting Mode
Selecting “01” in Setting mode “ ” activates the control setting mode.
Each presses of the [MODE] key changes the operating mode as follows.

No.	Modes	Function	Selectable Setting	Default
1	Control Mode Setting	Sets control mode. Select with [▲] or [▼] keys	(RUN): Temperature control and pump/fan operation enabled (RDY): Temperature control and pump/fan operation disabled
2	Heating Proportional Band Setting	Sets the proportional band for heating. Set with [▲] or [▼] key	0.1 to 200.0 %	7.5%
		This range is a percentage of temperature setting range.

No.	Modes	Function	Selectable Setting	Default
3	Integral Time setting	Sets the integral time. Set with [▲] or [▼] key	0 to 3600 sec. If “0” is set, integral control is disabled.	20sec
4	Derivative Time Setting	Sets the derivative time used for PID control. Set with [▲] or [▼] key	0 to 3600 sec. If “0” is set, derivative control is disabled.	0sec
5	Heating Proportional Cycle Setting	Sets heating proportional cycle. Set with [▲] or [▼] key	0.1 to 120.0 sec If the proportional cycle is set at 1 sec. and Heating Output is 70%, the output will be 0.7 sec. ON and 0.3 sec. OFF.	1.0sec
6	ARW Setting	Sets anti-reset wind-up. Set with [▲] or [▼] key	0.0 to 110.0 % Reduces overshoot in PID control due to integrating operation. The integration operation is not performed above the set value. The set value must be higher than the output at stable control.	100.0%
7	Cooling Proportional Band Setting	Sets cooling proportional band for cooling. Set with [▲] or [▼] key	0.10 to 10.00 times.	0.50 times of P1 set value

8	Cooling Proportional Cycle Setting	Sets cooling proportional cycle. Set with [▲] or [▼] key	0.1 to 120.0 sec If the proportional cycle is set at 1 sec. and Cooling Output is 70%, the output will be 0.7 sec. ON and 0.3 sec. OFF.	1.0sec
9	Fan Control Setting	Sets fan control. Select with [▲] or [▼] keys	0 : Variable fan speed mode Fan speed controlled according to controller output volume 1 : Low noise mode Constant fan speed regardless of controller output volume	0
10	High Temp. Cutoff setting	Sets high temperature cutoff Set with [▲] or [▼] keys	11.0 to 70.0°C (0.1°C)	70.0
		Sets upper limit of temp measured by the internal temp sensor and stops operation of the product.
11	Low Temp. Cutoff setting	Sets low temperature cutoff Set with [▲] or [▼] keys	0.0 to 59.0°C (0.1°C)	0.0
		Sets lower limit of temp measured by the internal temp sensor and stops operation of the product.
12	Operation start status setting	Sets operation start status. Select with [▲] or [▼] keys	1: Start up in the RDY mode after the power is turned on. (Temperature  control  and pump/fan operation disabled) 2: Start up in the RUN mode after the power is turned on. (Temperature  control  and pump/fan operation enabled)	1

SET2: Communication Setting Mode
Selecting “02” in Setting mode “ ” activates the control setting mode.
Each presses of the [MODE] key changes the operating mode as follows.

No.	Modes	Function	Selectable Setting	Default
1	Communication standard setting	Sets communication standard. Select with [▲] or [▼] keys	232C : RS-232C 485 : RS-485	232C
2	Communication parameter setting	Sets communication parameters Select with [▲] or [▼] keys	1st digit : Stop bit length 1: 1 bit, 2: 2 bit 2nd digit : Parity check : None, : Odd, : Even 3rd digit : Data length 7: 7 bit, 8: 8 bit 4th digit : BCC check : Disable, : Enable The number of digits is counted from the right side.
3	Communication speed setting	Sets the communication speed. Select with [▲] or [▼] keys (2.4 ⇔ 4.8 ⇔ 9.6 ⇔ 19.2 ⇔ 38.4)	2.4 ~ 38.4 (2400 bps ~ 38400 bps)	9.6 (9600 bps)
4	Communication address setting	Sets the communication address of the product. Set with [▲] or [▼] key	1 to 99 addresses	1
5	Response delay time setting	Sets the response delay time. Set with [▲] or [▼] key	0 to 250 ms	0ms

 Outline Dimensions (mm)

Key Parts

Maintenance

9.1 Daily Check

1. Indication of display panel: Check temperature condition and confirm whether or not an alarm has occurred.
2. Confirm that the panel, heat sink and filter are free from dust. A large amount of dust may impair the performance.
3. Confirm there is no leakage of circulating fluid and check the condition of the piping (e.g. no tight bends or crushed pipes).
4. Confirm there is no abnormal sound, smell or heating from the product.

Caution

• When cleaning the panel, heat sink, filter use a vacuum cleaner to remove the dust. Do not use water or steam since it leads to rusting of the frame.

9.2 General Maintenance
Replace the circulating fluid regularly to avoid any problems due to algae or contamination.
<Drain circulating fluid>

1. Drain circulating fluid from the circulating fluid IN port.
   Loosen the reservoir cap to help draining. (Do not remove the cap)
2. To drain from the piping, blow air (0.05MPa, about 1 minute) from the circulating fluid OUT to IN port. Close the reservoir cap while blowing.

Clean air filter periodically to avoid declining performance.
<Clean air filter>

1. Make sure that power is not supplied (or that the power plug is disconnected).
2. Remove the filter maintenance screw (1 place), the front panel, then the air filter.
3. After cleaning the filter, return it to the product.

Troubleshooting

10.1 Alarm list

10.2 Troubleshooting

4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN
Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362
URL https://www.smcworld.com

Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
© 2022 SMC Corporation All Rights Reserved

References

• SMC株式会社
• SMC株式会社