Emerson 381333122 E manual Controller Ground, Engine Starting Contacts, Auxiliary Circuits

INSTALLATION	(continued)
Controller Ground	Harnesses

A grounding wire must be connected to the controller’s lower left mounting stud. Because the controller is mounted on the enclosure door, a conductive strap must be used between the enclosure and the door. This connection provides proper grounding which does not rely upon the door hinges.

Engine Starting Contacts

Customer connections for engine control contact and TS auxiliary contacts connections are located on terminal block TB which is mounted on the front of the transfer switch. Refer to wiring diagram provided with the Series 300 ATS and connect the engine start wires to the appropriate terminals. See Figure 1–1 and Table A.

Table A. Engine start connections.

When normal	Terminals on
source fails	transfer switch
contact closes	TB1 and TB2
contact opens	TB1 and TB3

Auxiliary Circuits

Connect auxiliary circuit wires to appropriate terminals on transfer switch terminal block TB as shown on the wiring diagram provided with this Series 300 Automatic Transfer Switch. Make the necessary auxiliary connec- tions by referring to Section 5, Control Features.

The transfer switch is connected to the left side of the controller by a plug–in harness (two plugs).

Engine Starting	TS Auxiliary Contacts
Signals	Feature 14A & 14B
5 amps, 32 V DC	10 amps, 32 V DC
5 amps resistive 28 V DC	10 amps 250 V AC	TB Terminal Block
or 120 V AC max.	general purpose
		(field connections)
		accepts wire range
FEATURE 7 closes to start FEATURE 8 opens to start		22–12 AWG

Figure 1-1. Connections to engine starting contact

terminal block located on the Transfer Switch.

Connections to Controller for other Control Features (located on bottom of Controller):

Load Disconnect	Programmable
Feature	Engine Exerciser
Connections	connection,
(see Wiring Diagram	if provided
& refer to page 5–4	(refer to

for DIP switch settings) page 5–2)

Remote Control Features Connections
(refer to the Wiring Diagram &
page 5–4 for DIP switch settings)
Each control contact must be suitable	for factory
for a 5 V DC low energy circuit.	use only

Figure 1-2. Input / output label on the Controller showing possible connections to the lower terminal block.

1--2