Issue
A user would like to know what different behaviours LEDs on EM4300 series meter can have and what do they indicate.
Product Line
EM4300 series meters
EM4302
EM4305
EM4310
EM4320
Environment
LED indicators on EM4300 series meters
Resolution
The red and green LEDs blink in specific patterns to indicate different events
Red LED off, green LED blinks once every 2 seconds
This is the normal state. It indicates that the meter is communicating with the wireless gateway and is operating properly.
No LED activity
If both LEDs are off, this indicates that there is no power to the meter or the meter is non-operational.
1. Ensure the voltage lines are wired correctly to the meter.
2. Use a properly rated voltage sensing device to verify voltage is present on the voltage inputs.
3. Power cycle the meter.
Red LED behavior
The red LED indicates the meter’s ZigBee communications status. The red LED is normally off to indicate that the meter is bound to the wireless gateway and is communicating properly.
Red LED turns on for 1 second then off for 1 second
This indicates that the meter is in scanning mode and is searching for a wireless network.
This is the behavior of the red LED when the meter is first powered up. It scans for open ZigBee networks, then connects to (or joins) the preferred network, typically the one with the strongest signal.
The red LED blinks 4 times per second when the meter has joined a network.
If the red LED remains in scanning mode, verify that the wireless gateway device is powered on and that its ZigBee wireless network is open. If the problem continues, power cycle the meter.
Red LED blinks 4 times per second
This indicates that the meter is in a joined state. The meter has found an open ZigBee network and has connected to it
The meter then waits to bind with the wireless gateway. Some gateways automatically bind the device that joined their network. Other gateways require you to select the joined device and manually bind it to the gateway’s network.
The red LED turns off when the meter is bound to the gateway’s ZigBee network.
If the red LED remains in joined state, check the gateway to make sure it is seeing the meter. If the gateway cannot see the meter, it could mean that the meter has joined another network.
Power cycle the meter. If the problem continues, you need to disconnect (or unjoin) the meter from the network.
Red LED turns on for 1 second then blinks 3 times per second
This indicates that the meter has lost wireless connection to the network.
This means the meter has joined an open ZigBee network but lost connection and could not rejoin that network.
Make sure the wireless gateway network you want to connect to is open. Power cycle the meter. You may also try power cycling the gateway. If the problem continues, you need to disconnect (or unjoin) the meter.
Red LED stays on
This means the meter’s communication circuitry is non-operational.
Power cycle the meter.
Red LED blinks 1 second, turns off 1 second, then blinks 4 times per second
The meter intermittently changes from searching to joining mode, but is unable to bind with the wireless gateway. Relocate the wireless gateway closer to the meter.
Green LED
The green LED is associated with the meter’s operating state. The green LED blinks once every 2 seconds to indicate that the meter is operating properly.
Green LED turns off 1 second then blinks 2 times
This indicates that the meter is attempting but not able to establish communications or data transfer within its internal components or circuitry.
Power cycle the meter.
Green LED turns off 1 second then blinks 3 times
This indicates that the meter is attempting but not able to synchronize to line frequency.
Power cycle the meter.
Green LED turns off 1 second then blinks 4 times
This indicates that the meter is attempting but not able to establish communications or data transfer within its internal components or circuitry and is attempting but not able to synchronize to line frequency.
Power cycle the meter.
A user would like to know what different behaviours LEDs on EM4300 series meter can have and what do they indicate.
Product Line
EM4300 series meters
EM4302
EM4305
EM4310
EM4320
Environment
LED indicators on EM4300 series meters
Resolution
The red and green LEDs blink in specific patterns to indicate different events
Red LED off, green LED blinks once every 2 seconds
This is the normal state. It indicates that the meter is communicating with the wireless gateway and is operating properly.
No LED activity
If both LEDs are off, this indicates that there is no power to the meter or the meter is non-operational.
1. Ensure the voltage lines are wired correctly to the meter.
2. Use a properly rated voltage sensing device to verify voltage is present on the voltage inputs.
3. Power cycle the meter.
Red LED behavior
The red LED indicates the meter’s ZigBee communications status. The red LED is normally off to indicate that the meter is bound to the wireless gateway and is communicating properly.
Red LED turns on for 1 second then off for 1 second
This indicates that the meter is in scanning mode and is searching for a wireless network.
This is the behavior of the red LED when the meter is first powered up. It scans for open ZigBee networks, then connects to (or joins) the preferred network, typically the one with the strongest signal.
The red LED blinks 4 times per second when the meter has joined a network.
If the red LED remains in scanning mode, verify that the wireless gateway device is powered on and that its ZigBee wireless network is open. If the problem continues, power cycle the meter.
Red LED blinks 4 times per second
This indicates that the meter is in a joined state. The meter has found an open ZigBee network and has connected to it
The meter then waits to bind with the wireless gateway. Some gateways automatically bind the device that joined their network. Other gateways require you to select the joined device and manually bind it to the gateway’s network.
The red LED turns off when the meter is bound to the gateway’s ZigBee network.
If the red LED remains in joined state, check the gateway to make sure it is seeing the meter. If the gateway cannot see the meter, it could mean that the meter has joined another network.
Power cycle the meter. If the problem continues, you need to disconnect (or unjoin) the meter from the network.
Red LED turns on for 1 second then blinks 3 times per second
This indicates that the meter has lost wireless connection to the network.
This means the meter has joined an open ZigBee network but lost connection and could not rejoin that network.
Make sure the wireless gateway network you want to connect to is open. Power cycle the meter. You may also try power cycling the gateway. If the problem continues, you need to disconnect (or unjoin) the meter.
Red LED stays on
This means the meter’s communication circuitry is non-operational.
Power cycle the meter.
Red LED blinks 1 second, turns off 1 second, then blinks 4 times per second
The meter intermittently changes from searching to joining mode, but is unable to bind with the wireless gateway. Relocate the wireless gateway closer to the meter.
Green LED
The green LED is associated with the meter’s operating state. The green LED blinks once every 2 seconds to indicate that the meter is operating properly.
Green LED turns off 1 second then blinks 2 times
This indicates that the meter is attempting but not able to establish communications or data transfer within its internal components or circuitry.
Power cycle the meter.
Green LED turns off 1 second then blinks 3 times
This indicates that the meter is attempting but not able to synchronize to line frequency.
Power cycle the meter.
Green LED turns off 1 second then blinks 4 times
This indicates that the meter is attempting but not able to establish communications or data transfer within its internal components or circuitry and is attempting but not able to synchronize to line frequency.
Power cycle the meter.
發佈於:施耐德電機Taiwan
