Pentair raychem ngc-30/uit2, Programming Manual

Page: 54 / 84

54 / 84 industrial heat tracing solutions EN-RaychemNGC30UIT2Programming-AR-H58186 02/16
Low Voltage Line voltage went below low voltage alarm setting
Power Input Alarm Power Input state does not match the Relay Output State
Relay Cycle Alarm EMR cycle count went above relay cycle alarm setting
Relay Failure Alarm EMR or SSR was commanded to turn off. However, a heater
current was still being detected. This condition can indicate a failed
contactor or SSR (stuck on)
RTD Failure Open or shorted RTD detected
User Alarm User configurable alarm
Safety Limiter Comm
Alarm
Raychem NGC-20 Safety Limiter sub-system cannot communicate
with Raychem NGC-20 processor
Safety Limiter Sensor
Failure
Raychem NGC-20 Safety Limiter RTD fails
Safety Limiter Trip Alarm Raychem NGC-20 Safety Limiter temperature above Safety Limiter
setpoint
table 3.5 events and descriptions
event description
Alarm Ack Date and time stamps when an Alarm was acknowledged
CB Trip OK Circuit Breaker is no longer tripped.
Comm Alarm Communication with a specified Raychem device has been
interrupted
Comm OK Communication with device/s was restored.
Date/Time Error Date or time information is not correct and must be updated
Events Cleared Date and time stamps when Events menu was cleared in
System | Maint. window
Fail Safe Alarm Control mode of Circuit has been switched to Fail Safe control mode
Fail Safe OK At least one valid RTD value was restored, allowing normal control
to resume
Ground-Fault Alarm Heater’s ground-fault current has exceeded Ground-Fault Alarm
limit for Circuit
Ground Fault OK Ground fault returned to acceptable range
Ground-Fault Trip Heater’s ground-fault current has exceeded Ground-Fault Trip limit
for Circuit and has disabled the contactor or SSR
table 3.6 events and descriptions (Continued)
event description
Ground-Fault Trip OK Ground-fault current returned to acceptable range and Alarm Reset
Button was pushed
Heater Time Alarm Heater has reached the alarm threshold for the heater time on
Heater Time Reset Heater hours counter field was reset to 0
High Current Heater’s Current has exceeded High Current Alarm limit for Circuit
High Temp RTD temperature has exceeded High Temp Alarm limit for Circuit
High Temp Cut-Out OK RTD temperature return to acceptable range
Line Current OK Heater’s Line Current returned to acceptable range
Circuit Deleted Date and time stamps when Circuit was deleted in Setup|Circuit
window
Low Current Heater’s current has dropped below Low Current Alarm limit for
Circuit
Low Temp RTD temperature has dropped below the Low Temp Alarm limit for
Circuit