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Electronic Bypass Controller Installation and Commissioning Guide
Section 6 - Alarm & Faults
There are two different locations a fault or alarm will be displayed:
1. The electronic bypass keypad
2. The VFD keypad
6.1 Electronic Bypass Keypad Alarms and Faults
There are four (4) Alarm LEDs on the electronic bypass keypad indicating the faults
that may occur. They are as follows:
1.
Motor Overload:
Indicates that the manual motor overload relay has tripped.
Check that overload relay is properly set for motors full load Ampere rating. Check
for excessive motor current and load.
2.
Safety:
Indicates that an external safety interlock is in the open position.
If a safety input is not used, check the bypass terminal block for a jumper between
terminals TB2-3 and TB2-8. If a safety input is used, verify that the safety contact
is closed.
Incoming
Power
Power On
1 Select Operation Mode
RUN
(1) Rest mechanical overload inside enclosure
2 Select Run Mode
Input
Contactor
Bypass
Contactor
Output
Contactor
Press OFF/RESET once to cancel RUN mode
Press OFF/RESET twice to cancel OPERATION mode
TEST
HAND
VFD
AUTO
OFF
RESET
RESET
BYPASS
BYPASS
VFD
F
M
Alarm Display
Motor (1)
Overload
External
Safety
Fire
Alarm
VFD
Fault