Pd4 Exv Board (P Compressor Only - Carrier AquaEdge 23XRV Start-Up, Operation And Maintenance Instructions Manual

DPI RIBBON
CABLE CONNECTOR
NODE ADDRESS
TENS DIGIT = 0
(DO NOT
CHANGE)
DATA
RATE = PGM
(DO NOT
CHANGE)
A32
TERMINAL BLOCK
NODE ADDRESS
ONES DIGIT = 1
(DO NOT CHANGE)
STATUS
NUMBER
INDICATOR
1 DRIVE
2 MS
3 NET A
4 NET B
NOTE: If all status indicators are off, the Gateway is not receiving power.
Fig. 63 — Gateway Status LEDs
a23-1618
DESCRIPTION
DPI Connection Status
Module Status
Serial Communication Status
Serial Communication Traffic Status
DIP SWITCH
SETTINGS
LED
LIGHTS

Fig. 64 — PD4 EXV Board (P Compressor Only)
PD4 EXV BOARD (P COMPRESSOR ONLY) —
Fig. 64. The PD4 EXV board communicates with the master
CCM board through an RS-485 port. It provides input/output
for both the main condenser EXV and optional economizer
EXV, as well as the economizer gas temperature. Dip switch
settings are shown in Fig. 64.
During communication a green activity LED will be dis-
played, and a red LED will blink during normal operation at a
1-second-on, one-second-off frequency (0.5 Hz).
PD4 AUX1 BOARD (P COMPRESSOR ONLY) —
Fig. 65. The AUX1 board communicates through RS-485 (J9)
with the PD4 EXV board and the master CCM board. It pro-
vides input/output for the condenser liquid sensor. Dip switch
settings are shown in Fig. 65.
The red LED indicates the AUX1 board status as follows:
RED LED
CONDITION
Off continuously Board unpowered or power supply defective
On continuously Board is powered but board microcontroller is
inactive or defective
Flashing (1 sec- Board is operating with correct board microcon-
ond on, 1 sec- troller operation
ond off, 0.5 Hz)
Flashing at any Board is operating defectively
other frequency
The green LED lights every time the AUX board transmits
a message, so the frequency of the green LED is consistent
with the frequency of transmitted messages.
J4
COMMUNICATION
J3
ECONOMIZER GAS
TEMPERATURE
J2B
CONDENSER EXV
J2A
ECONOMIZER EXV
a23-1721
J1
24 VAC
123
AUX BOARD SOFTWARE STATUS
A23-1721
See
See
516