Emerson 381333230 manual Optional Features, Delay Before Transfer, Delay After Transfer

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SECTION 5 OPTIONAL FEATURES

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.

Note

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.

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 VDC or 120 VAC (6 amps resistive). The contact operates prior to a selectable 0, 3, 10, or 20 second delay before transfer of the Non-Automatic Transfer Switch. The contact resets either 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

 

 

 

 

 

Actuator 7 on

 

 

 

 

 

 

 

 

 

 

0 (disable)

 

 

 

 

 

 

7

 

Actuator 8 on

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 seconds

Actuator 7 on

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

 

 

 

Actuator 8 off

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 seconds

Actuator 7 off

 

 

 

 

 

7

 

 

 

 

 

 

 

 

Actuator 8 on

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20 seconds

Actuator 7 off

 

 

 

7

 

 

 

 

 

 

 

 

Actuator 8 off

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

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 signal to reset after the same delay as set for the Delay Before Transfer.

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Contents Identification Label Table of ContentsRating Label 100 150 200 Catalog Number Identification386 230 Installation Manual Operation Test Installation Functional TestElectrical Operation Voltage ChecksRetransfer to Normal Section Sequence of OperationTransfer To Emergency Replacement Parts Section Testing & ServicePreventive Maintenance TestingManual Load Transfer TROUBLE-SHOOTINGHow to Change a Setting AdjustmentsSensor Adjustments Delay After Transfer Optional FeaturesDelay Before Transfer Index