Emerson 7ADTB - Manual (Page 4)

INSTALLATION (continued)
1---2
Engine Starting Contacts
All customer connections, including the engine control
contact connections, are located on terminal block TB
which is mounted on the top right side of the enclosure.
Refer to the wiring diagram provided with the automatic
transfer switch and connect the engine start wires to the
appropriate terminals. See Figure 1–1 and Table A.
Table A. Engine start connections.
When normal source
fails
Terminals on
Terminal Block TB
contact closes TB1 and TB2
contact opens TB1 and TB3
Note: To temporarily disable engine control from
the automatic transfer switch you can unplug J3
from the small P3 receptacle at the bottom of the
assembly. Be sure to reconnect plug J3 to the P3
receptacle for automatic transfer switch operation.
Auxiliary Circuits
Connect auxiliary circuit wires to appropriate terminals
on transfer switch terminal block TB as shown on the
wiring diagram provided with this automatic transfer
switch.
engine start
connections
on
customer
terminal
block TB
Figure 1-1. Customer terminal block on the top right
side of the enclosure.
Functional Test
The Functional Test consists of two checks:
❐ 1 — Voltage Checks, page 1–3
❐ 2 — Electrical Operation, page 1–4
Do these checks in the order presented
to avoid damaging the 7ADTB.
Read all instructions on the Wiring Diagram and labels
affixed to the automatic transfer & bypass–isolation
switch. Note the control features that are provided and
review their operation before proceeding.
Continue to 1 – Voltage Checks on next page.