CONTROL FEATURES (continued)

Optional Accessory 11BG – SOURCE AVAILABILITY SIGNAL

& PROGRAMMABLE ENGINE EXERCISER MODULE

2–line

displayconnections for source availability signal contacts

3 buttons

Figure 5–2. Accessory 11BG module (mounted behind operator interface and connected to the controller)

includes source availability signal contacts and a programmable engine exerciser.

Source Availability Signal Contacts

The module provides one Form C contact each for the normal and emergency sources signal the acceptability of the source as sensed by the controller. The signal contacts operate in conjunction with the Source Accepted lights on the operator interface. Field wiring terminals are provided as shown in Figure 5–3 and the wiring diagram.

Contact ratings:

2 amps @ 30 Vdc, 0.5 amp. @ 125 Vac resistive

SOURCE

AVAILABILITY SIGNALS

2 AMPS @ 30 VDC, resistive

0.5 AMP @ 125 VAC, resistive contacts shown de–energized

Figure 5–3. Source availability signal contacts.

Programmable Engine Exerciser

The module includes a programmable engine exerciser that provides for weekly or biweekly operation. This optional exercise timer may have to be turned on (enabled) by setting the S1 DIP switch actuator 7 to off, and S2 DIP switch actuator 5 to off. A backup battery in the controller (see page 4–2 and page 5–3) must be turned on to maintain the settings and to allow programming with the normal and emergency power turned off (page 5–1).

The programmable engine exerciser incorporates a 7 day or 14 day time base. Proper controller settings must be made to determine whether or not the test will be done with or without load transfer (S1 DIP switch actuator 8).

See next page for instructions on setting the timer.

5---2

DIP Switch Settings in the Controller

(see page 4–2)

FUNCTION

S1 DIP

 

 

 

S2 DIP

 

 

SWITCH

 

 

 

SWITCH

 

 

 

 

 

 

 

 

Opt. Timer

Actuator

 

 

 

 

 

 

 

 

Actuator

 

 

 

 

 

 

5

 

 

 

 

 

7

 

 

 

 

Enabled

7 off

 

 

 

 

 

 

5 off

 

 

 

 

 

 

 

Opt. Timer

Actuator

 

 

 

 

 

 

Actuator

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

5

 

Disabled

7 off

 

 

 

 

 

 

 

5 on

 

 

 

 

 

 

 

Exercise

Actuator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

without

 

 

 

8

 

 

 

 

 

 

 

 

 

 

Load

8 off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exercise

Actuator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

with

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

8 on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Load

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shaded DIP switches are standard factory settings.

Page 14
Image 14
Emerson 381333122 E manual Control Features, Programmable Engine Exerciser Module