4-34 Controller Troubleshooting
TP-5672 11/95
Off Delays
The Off position time delay allows an off position power
conversion unit to stop for a defined period of time in the
off position. A unique time delay can be programmed for
an off-to-normal transfer and an off-to-emergency
transfer. This off delay can be used to allow 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 STD and the jumper has no effect. On all power
conversion units with an
Off
position except the MM and
MN, the off delays can be set to zero. On the MM and MN
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 the Off
Delays option is enabled. If not enabled, see Figure 4-18
to troubleshoot shunt-jumper controlled options.
