girdComm NB-IoT NEMA SLC-N-500-NB Smart Light Controller
Overview
NB-IoT is a low-power WAN (LPWAN) communication technology with promising prospects. It has been widely used in various fields of the Internet of Things. It can be seen that the NB-IoT communication module occupies an important position in the Internet of Things industry.
NB-IoT NEMA Smart Light Controller (SLC) as shown in Fig. 1 is a remote-control device for HID or LED luminaires equipped with an ANSI C136.41 NEMA receptacle. The controller connects with a cellular NB-IoT network directly. This in turn connects with the remote management platform for management and control as shown in Fig. 2. The controller is exceptionally suitable for various terrains and environments and comes with a built-in tilt sensor and Global Positioning System (GPS).
Management Platform
- Built-in standard NB-IoT communication module to realize long-distance transmission, low-power operation, large-capacity networking, and high-reliability communication
- Connects to supporting cellular networks and supports remote control such as on/off, dimming, status monitoring of the streetlight, etc.
- Built-in electric energy metering chip with 1%accuracy
- Built-in with tilt sensor to detect the uprightness of lamp post
- Built-in GPS positioning chip for auto-mapping of streetlight positioning
- Built-in light sensor for environment-based turning on/off of streetlights based on the brightness level
- Built-in RTC for onboard scheduled dimming
- Monitored parameters include voltage, power, current, energy consumption, power factor, temperature, and frequency, etc.
- Option for the built-in real-time clock can store device energy consumption data per day
- Service life- > 5 years
Features
- NEMA interface, compatible with standard ANSI C136.41
Electrical & Hardware Parameters
| Input Voltage | 110Vac~277VAC | Short Circuit Protection | No |
| Rated Voltage | 230VAC | Over-Temperature Protection | Yes |
| Operating Voltage | 105- 440 VAC (support for standard voltage 120V~ 277V and high voltage 120V ~480V | Housing Material | Polycarbonate |
| Power Frequency | 47Hz to 63Hz | IP Protection | IP66 |
| Maximum Output Power | 500W | MTBF | >200K hours |
| Output Power | Class 5 (Typ. 21dbm) | Receiving Sensitivity | -135 dBm |
| Maximum Load Current | 4A | Operating Temperature | -40℃ to +70℃ |
| Standby Power Consumption | <2W | Storage Temperature | -40℃ to +85℃ |
| NB-IoT Frequency | B2/B4/B5/B12/B13 | Dimensions（L*W*H） | 89mm*89mm*120mm |
| Dimming Output | • 0V-10V @ 27mA(max), PWM, DALI optional | Weight | 0.3kg |
| Metering Accuracy | <1% | Maximum Ambient Temperature | 80℃ |
| ANSI standard | C136.41 NEMA 7-pin Smart City ready | Security | TLS/AES |
| OTA Support | Yes | Field firmware upgrades | Yes |
| THD | <10% | Safety Standard | CE |
| Tilt Sensor & GPS | Yes | Surge Protection | 320J, 6KV/3KA (option for 405~440J) |
| Overload Protection | Yes | Electro Magnetic Compliance | EN55015, EN55022, FCC |
Fault Alerts and Resulting Operations
| Fault Alert | Conditions | Resulting Operations | Notes |
| Over Temperature | ＞95℃±2℃ | Reports fault alert, shutdown, recovers | NEMA SLC internal |
| to pre-shutdown condition1 @ temperature＜90℃±2℃ | temperature, not environment temperature | ||
| Under Temperature | ＜-25℃±2℃ | Reports fault alert, no shutdown, removes fault alert @ temperature＞- 25℃±2℃ | NEMA SLC internal temperature, not environment temperature |
| Open Circuit (at Output) | Power＜5W±1W | Reports fault alert @ Power＜5W±1W, no shutdown, removes fault alert @＞ 5W±1W | |
| Over Power | ＞520W±5W or ＞4.2A±200mA | Reports fault alert, shutdown, resets2, then recovers。 | |
| Over Voltage | ＞285V±3V | Reports fault alert, shutdown, recovers to pre-shutdown condition @＜ 280V±3V | |
| Under Voltage | ＜95V±3V | Reports fault alert, shutdown, recovers to pre-shutdown condition @＞ 100V±3V |
Note:
- State before shutdown: Working state of the product when no alarm is generated, if the product fails at 50% dimming, it will be restored to this state after the failure is removed.
- Restart: The product needs to be powered off and then powered on again.
- Execution actions: All execution within 4 seconds
Smart Functions Details
| Smart Function | Details |
| Dimming | Dimming control is carried out over NB-IoT with 0-10V output and PWM output. PWM outputs 0-100% at <2% accuracy, non-polarity |
| Energy Metering | Integrated with metering circuitry at 2% accuracy reading Input Voltage, Input Current, Active Power. Power Factor and Temperature. Performs electrical parameter read-back via NB-IoT. |
| Fault Reporting | Reports real-time fault conditions such as Open-Loop, Over-Voltage, Under-Voltage, Temperature, pole slanting etc. |
LED Indications
| LED | Color | Function indications |
| LED1 | Green | TX Indication, turn on 300ms when data is transmitting |
| LED2 | Red | RX Indication, turn on 300ms when data is receiving |
| LED3 | Red | MQTT broker server connection Indication 1, 1000ms ON/1000ms OFF: disconnected with MQTT broker server 2, 100ms ON/100ms OFF: Connected to MQTT broker server |
|
LED4 |
Red | Cellular status Indication: 1, 64ms ON/800ms OFF: Unregistered network 2, 64ms ON/3000ms OFF: Registered network 3, 64ms ON/300ms OFF: Connected to TCP/HTTP network 4, OFF: Cellular not working |
Dimensions
Wiring and Installation
To lock the NEMA SLC onto the NEMA-enabled lamp, align the pins and mount the unit onto the NEMA adaptor in clockwise manner. To unlock, turn anti-clockwise.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.
FCC Warning
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
NOTE 1: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Contact Information
For more information regarding the NB-IoT NEMA SLC-N-500-NB including pricing, and ordering please contact: GridComm Pte Ltd www.gridComm-plc.com [email protected]
PB2004_02 NB-IoT NEMA SLC-N-500-NB Smart Light Controller DRAFT Product Brief
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