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SECTION 5 OPTIONAL FEATURES
5 --- 1
MOTOR LOAD TRANSFER
Inphase monitoring logic controls transfer and
retransfer of motor loads, so that inrush currents do
not exceed normal starting currents. It avoids nuisance
tripping of circuit breakers and mechanical damage to
motor couplings.
The Motor Load Transfer feature is built into the
controller. DIP switch S1 (actuator 5) activates this
feature: right = ON, left = OFF.
FUNCTION S1 DIP SWITCH
enable Actuator 5 on
5
disable Actuator 5 off
5
Shaded DIP switches are standard factory settings.
If the Motor Load Transfer feature is enabled,
it will be activated following
the Load
Disconnect Feature Delay Before Transfer
delay. Also, the transfer switch may not
operate immediately after the transfer control
switch is operated, even if both sources are
available. This delay is intentional introduced
if the two power sources are not inphase.
Depending on the frequency difference, it
may take a few seconds for the sources to
reach synchronism.
Note
LOAD DISCONNECT FEATURE
Connect external circuits to the terminals indicated on
the Wiring Diagram in the back of this manual.
The double throw (Form C) contact is rated for 28
VDCor120VAC(6ampsresistive). Thecontact
operates prior to a selectable 0, 3, 10, or 20 second
delay before transfer of the Non-Automatic Transfer
Switch. The contact resets ei ther immediately
following transfer or after the same
delay as set for
pre–signal before transfer.
Time delay between the load disconnect control signal
and initiation of transfer is set on the controller with
DIP switch S2 (actuators 6, 7, 8) as shown below:
Delay Before Transfer
LD TDBT S2 DIP SWITCH
0 (disable)
Actuator 7 on
Actuator 8 on
87
3seconds
Actuator 7 on
Actuator 8 off
87
10 seconds
Actuator 7 off
Actuator 8 on
87
20 seconds
Actuator 7 off
Actuator 8 off
87
Shaded DIP switches are standard factory settings.
Delay After Transfer*
LD TDAT S2 DIP SWITCH
enable Actuator 6 on
6
disable Actuator 6 off
6
*Enabling the Delay After Transfer will cause the
control si gnal to reset after the same delay
as set for
the Delay Before Transfer.