Emerson 400A Switch User Manual


 
INSTALLATION (continued)
1 --- 2
Engine Starting Contacts
The engine control contact connections are located on
the transfer switch. Connect signal wires to appropriate
term– inals as specified in Tab le A, shown in Figure 1–2.
Table A. Engine start connections.
When normal source
fails
Terminals on transfer
switch
contact closes TB14 and TB15
contact opens TB14 and TB16
Transfer Switch
Figure 1-2. Engine starting contact label and location
for 260 and 400 ampere transfer switches.
Controller Ground
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.
Harnesses
The transfer switch is connected to the left side of the
controller by a plug–in harness (two plugs).
Auxiliary Circuits
Connect auxiliary circuit wires to appropriate terminals
on transfer switch. Note the control features that are
furnished on this switch. Make the necessary auxiliary
connections by referring to Section 5, Control Features.
Connections to Controller for other Control Features (located on bottom of Controller):
for factory
use only
Remote Control Features Connections
(refer to the Wiring Diagram &
page 5–5 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 5–5
for DIP switch settings)
Figure 1-3. Input / output label on the Controller showing possible connections to the lower terminal block.