4-34 Controller Troubleshooting
TP-5672 11/95
Off Delays
The Off position time delay allows an off position power
conversionunit to stop fora definedperiodof time inthe
offposition. Auniquetimedelay canbe programmedfor
an off-to-normal transfer and an off-to-emergency
transfer. This off delay canbeused toallow motor loads
to come to rest before being reenergized. The
OFF DELAYS jumper must be installed on the logic
board. See Figure 4-15. Off delays cannot be enabled
on a switch type that does not have an Off position like
ZENITH STDandthejumperhasnoeffect. Onallpower
conversionunits withan Off position exceptthe MMand
MN,theoffdelayscanbesettozero. OntheMMandMN
power conversion units the minimum off delay is
one second.
If the Off Delays jumper is not installed, install the Off
Delay jumper on JP1 and power down the controller for
1 minute minimum.
If the jumper is installed, check Index 11 to see if theOff
Delaysoptionisenabled. If notenabled,seeFigure 4-18
to troubleshoot shunt-jumper controlled options.