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V1.0 | NRG EtherNet/IP Preliminary User Manual | © 2020 | CARLO GAVAZZI LTD.
EN
Mains loss
Description
Voltage and current signals are missing for more than 3 mains half cycles. The
cause is a mains loss (Ref terminal must be connected to identify this alarm
otherwise alarm can be either mains loss or load loss)
Diagnose
Ensure mains supply is ON. Confirm that protection (fuses / miniature circuit
breakers) have not tripped. Ensure L1 terminal of RG..N is properly connected.
Load loss / SSR Open Circuit
Description
Load is not switching ON for > a mains half cycle when control signal is present.
The cause is either a load loss or a RG..N open circuit condition.
Diagnose
Make sure that load is not faulty or if the SSR is in an open circuit condition. If an
RG..N is replaced, make sure to follow the re-addressing procedure.
SSR Short Circuit
Description
This condition is identified when current, >300mA flows through the RG..N output
when control signal is OFF.
Diagnose
Make sure that the appropriate short circuit protection is utilised. If an RG..N is
replaced, follow re addressing procedure at power-up. Check load and
protection devices (fuses or Miniature Circuit Breakers) status before re-starting.
Frequency out of range
Description
This condition is identified when the frequency measured by the RG..N is not
within the set range hence is > Over Frequency value or < Under Frequency
value. This alarm is issued if this condition is present for >10 seconds. Though
indicated as an alarm condition, this alarm has no effect on the function on the
RG..N and it is up to the user to decide what to do when this alarm is activated.
Diagnose
Check line frequency and ensure that the over and under frequency limits are set
properly. Though the swi
tching function of the RG…N is not affected by this
alarm, care must be taken to make sure RG..N is operated within its rated
specification.
Current out of range
Description
This condition is identified when the frequency measured by the RG..N is not
within the set range hence is > Over Current value or < Under Current value. This
alarm is issued if this condition is present for >10 seconds. Though indicated as an
alarm condition, this alarm has no effect on the function on the RG..N and it is up
to the user to decide what to do when this alarm is activated.
The over current limit is bounded by the maximum current for each NRG solid
state relay variant. A list of the variants with their maximum current values is listed
in the table below.
Current limits
RGC1A60CM25KEN
33
RGC1A60CM32KEN
33
RGC1A60CM32GEN
47
RGC1A60CM42GEN
64
RGC1A60CM62GEN
93
RGS1A60CM50KEN
55
RGS1A60CM92KEN
99
RGS1A60CM92GEN
99
Diagnose
The over current limit is bounded by the maximum current for each NRG solid
state relay variant. A list of the variants with their maximum current values is listed
in the table below.
Voltage out of range
Description
This condition is identified when the voltage measured by the RG..N is not within
the set range hence is > Over Voltage value or < Under Voltage value. This alarm
is issued if this condition is present for >10 seconds. Though indicated as an alarm
condition, this alarm has no effect on the function on the RG..N and it is up to the
user to decide what to do when this alarm is activated.
