INSTALLATION (continued)
1--2
Controller Ground
A groundingwire 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 connectionsare located on terminal
block TB which is mounted on the front of the transfer
switch. Refer to wiring diagram provided with the Series
300 ATSa nd connectt he engine start wires to the
appropriate terminals. See Figure1–1 and Table A.
TableA. Engine start connections.
When normal
source fails
Ter m i n a l s on
transfer switch
contact closes TB1 and TB2
contact opens TB1 and TB3
Auxiliary Circuits
Connect auxiliarycircuit wires to appropriate terminals
on transfer switch terminal blockT B as shownon the
wiring diagram provided with this Series 300 Automatic
TransferSwitch. Make the necessary auxiliary connec-
tions by referring to Section 5, Control Features.
Harnesses
The transfer switch is connected to the left side of the
controller by a plug–in harness (two plugs).
TB TerminalBlock
(field connections)
accepts wire range
22–12 AWG
EngineStarting
Signals
5amps,32VDC
5ampsresistive28VDC
or120 V AC max.
TSAuxiliary Contacts
Feature14A & 14B
10amps, 32 V DC
10amps 250 V AC
general purpose
FEATURE 7
closes to start
FEATURE 8
opens to start
Figure 1-1. Connections to engine startingcontact
terminal block located on th e Transfer Switch.
Connections to Controller for other Control Features (located on bottom of Controller):
for factory
use only
Remote Control Features Connections
(refer to the Wiring Diagr am &
page 5–4 for DIP switch settings)
Each control contact must be suitable
for a 5 V DC low energy circuit.
Programmable
Engine Exerciser
connection,
if provided
(refer to
page 5–2)
Load Disconnect
Feature
Connections
(see Wiring Diagram
& refer to page 5–4
for DIP switch settings)
Figure 1-2. Input / output label on the Controllershowing possible connections to the lower terminal block.