nVent RAYCHEM NGC-30 User Manual page 23

Demo unit
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WARNING: Fire Hazard. A ground-fault alarm means the heating cable has been
damaged or improperly installed and must not be ignored. Disabling the ground-fault trip
function reduces safety and could result in sustained electrical arcing or fire. To minimize
the risk of fire if the alarm activates, shut off the power and repair the system immediately.
Step 9: Go to Setup|Current screen.
Input the High Current Alarm and Low Current Alarm by pressing each of the two numeric
fields in turn, and enter the values using the pop-up number pad. Press Enter when done.
For this example, High Current Alarm is set to 10 A, and Low Current Alarm is set to 0 A.
IMPORTANT: Setting 0 for both High and Low Current Alarms completely
deactivates the Current Alarm function.
Input Power Limit – This input is enabled only when SSR control devices are detected
(NGC-30-CRMS panel). A Power Limit setting less than 100% will limit the "on-time" of a
constant wattage heater to the percentage indicated in the entry window. This has the
effect of lowering the amount of power that the heater can produce.
IMPORTANT: Power Limiting is not recommended if self-regulating heaters are
installed.
Step 10: Go to Setup|PLI Screen (If PLI modules are installed)
This window allows you to set the update time when using a PLI module. The update time,
in minutes, is used as the time that is waited before polling the sensor(s) for a new
temperature on a circuit after the circuit has turned off. The sensors are continuously
polled while the circuit is on.
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