McQuay RVSS14 Installation, Operation And Maintenance Manual page 49

Acceleration not operating as desired
Motor accelerates too quickly.
Motor accelerates too slowly
Motor stops unexpectedly while running
Fault Displayed.
Ready Displayed.
Display Blank, Heartbeat LED on D3
board not blinking.
IOMM Starter
Condition
Ramp time ( P8) too short.
Initial current ( P6) set too high.
Maximum current ( P7) set too high.
Kick start current ( P13) too high.
Kick start time ( P14) too long.
Motor RLA ( P1) or CT ratio ( P15)
parameter set incorrectly.
Starter Type parameter ( P64) set
incorrectly.
Maximum Motor Current setting
( P7) set too low.
Motor loading too high.
Motor RLA ( P1) or CT ratio ( P15)
parameter set incorrectly.
Abnormally low line voltage.
Ramp time to long
Condition
Fault Occurred.
Start command lost.
Control voltage absent.
D3 control board problem.
Cause
Increase ramp time.
Decrease Initial current.
Decrease Maximum current.
Decrease or turn off Kick current.
Decrease Kick time.
Verify that Motor FLA and CT ratio
parameters are set correctly.
Verify that Starter Type parameter is
set correctly.
Review acceleration ramp settings.
Reduce load on motor during
starting.
Verify that Motor FLA and CT ratio
parameters are set correctly.
Fix cause of low line voltage.
Decrease ramp time
Cause
See fault code troubleshooting table
for more details.
Verify start command input signal is
present or serial communications
start command is present.
Check any permissives that may be
wired into the run command
(Start/Stop)
Check for proper control voltage
input. Verify wiring and fuses.
Consult factory.
Solution
Solution
49