McQuay MicroTech Unit Controller Installation And Maintenance Data page 16

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Figure 15. Daughter Board

NOTE: The daughter board colle& and condltlons dIgItal signals and delivers lh,: neww

plug-in ribbon cable

L3, etc. These lights will glow when the contact in the ap-

propriate protective circuit is closed. Contacts are +24 volt

AC and must be closed, lighting the LED for the starting se-

tified in Table 8.

Table 9. Daughter Board Terminal Connections.

NOTES:

1. No field wiring required.

2. See Sensor and Control Connectlorl Taole for connections to terminal boards TSi, TS:!, and T!

Pulsed volts to power status LED's Zero volts LED "or". 5 volts LED "off"

4 ** Under control of the "Watchdog" cwcult

5. 12 volt AC and unregulated 17 VDC voltages are approwmate Actual values may be s/lghtlv m '? tir less

6 See the Control Devices Table for wiring to daiighter board terminal strtps TSl TS3 arc 1%

Page 16 I IM 403

TRANS.2 & TS2-4

Daughter Board

Table 8. LED Description

SURGEGUARD

2 -

MOTOR TEMPERATURE

HIGH DISCt'ARGE PRESSURE

EVAPORATOR LOW PRESSURE

6 --- PANEL SIARTSTOP

9 -- EVAPORATOR FLOW & PUMP

11 -- REMOTE START'STOP

12 -- VANE C

OSE SWITCH

FUSE

STRIP

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