Carrier Omnizone 50BV020-064 Installation, Start-Up, Service And Controls Operation And Troubleshooting page 38

®
BACnet
UC Open XP
24VAC, 50-60 Hz
20VA, 0.83A
24VAC Step Down Use Copper
Conductors Only
INPUT Transformer
POWER
24VAC
Gnd
T1
Off
1
Power
On
Batt
-
CR2032
Port 2b*
Rnet
Local
Rnet
Access
Gnd Gnd
Rnet+
Rnet +
Rnet-
Rnet -
+12V
Sense
+12V
Run
10's
Module
Address
1's
Error
Unused
5
6
7
8
Full Half
Duplex
EIA- EIA-
485 232
BT485
Port 2a
TO BACnet Port 2a
MS/TP
2w 4w 232
NETWORK Net+ Tx+ Tx
Net- Tx- Rx
n/c Rx+ DTR
n/c Rx- DCD
Signal Ground
Tx
BT485
Port 1
Rx
Net +
Port 1
Net -
ARC156
Only
Gnd
STANDARD COMPONENTS:
EWTS - ENTERING WATER TEMPERATURE SENSOR
LWTS - LEAVING WATER TEMPERATURE SENSOR
MRV - MODULATION REHEAT VALVE
RAT - RETURN AIR TEMPERATURE SENSOR(S)
SAT - SUPPLY AIR TEMPERATURE SENSOR
BM1 - BLOWER MOTOR 1
OPTIONAL COMPONENTS:
[ ] BM2 - BLOWER MOTOR 2
[ ] CSS - COMPRESSOR STATUS SWITCHES
[ ] DSS - DUCT STATIC SENSOR
[ ] IEM - INPUT EXPANSION MODULE(S)
[ ] IN4 - CO2 SENSOR
[ ] IN5 - RELATIVE HUMIDITY SENSOR
TERMINATION DETAIL 13
RH AND C02 SENSORS
TO 24VAC CHECK
SENSOR SPECS FOR
SUPPLY VOLTAGE
INFORMATION
IN 1 AND 2
SIGNAL
IN5
COM
Gnd
IN4
SIGNAL
Gnd COM
TERMINATION DETAIL
MODULATING RE-HEAT VALVES
AO2
Gnd
Fig. 34 — 50BVJ/W SCU VAV Open DDC Wiring Diagram
Optional - Occupancy Override
Digital Input
Universal
Input
0-10V
RTD
Therm
Dry
0-20mA Mode
(OPN-UCXP)
Select
Even Odd
Gnd 20 20
UI-12 19 19
+
UI-11 + 18 18
Gnd 17 17
UI-10
+ 16 16
UI-09
+ 15 15
Gnd 14 14
UI-08
+ 13 13
UI-07 12 12
+
11 11
Gnd
UI-06
+ 10 10
UI-05
+ 9 9
8 8
Gnd
UI-04 + 7 7
UI-03
+ 6 6
Gnd 5 5
UI-02
+ 4 4
Pulse Count Ability
UI-01
+ 3 3
Aux Pwr Out Gnd 2 2
Aux
Pwr Out
1 1
+24V +5V
Gnd 12 12
AO-6
+ 11
11
Gnd 10 10
AO-5
+ 9
9
Gnd 8 8
AO-4
+ 7
7
Gnd 6
6
AO-3
+ 5
5
AO Mode Select
Gnd 4
4
AO-2
20mA 10V
+ 3
3
YEL
Gnd 2
2
AO-1
20mA 10V
+ 1
1
RED
Gnd
Tx Xnet
Baud
Remote Xnet -
Rate
Expansion Xnet +
Rx
Switches
20
Network 20
(0 = off, 1 = on)
Unused
Protocol
19
8 7 6 5
19
MSTP (m) 0 0 0 0
18
18
MSTP (s) 0 0 0 1
BO-6
PTP 0 0 1 0 17
17
Tx N2 ®
0 0 1 1 16
16
® 15
Modbus 0 1 0 0
15
BO-5 14
SLTA 1 1 0 1
14
Rx *PlugIn
1 1 1 0
13
13
*Ethernet 1 1 1 1
PURPLE
12
12
BO-4 11
11
10
10
9 BROWN
9
BO-3
8
8
Open Energy
Management Equipment
7
7
6
6
BO-2
5
R 5
4
4
88FO
GREEN
3
3
E143900
2
TYPE: 002108 BO-1 2
1
1
BO Rating 5A @ 250VAC
Made in USA
TO 24 VAC R&C
OF UNIT XFMR
RH
CO2
AO2
Gnd
7
7
DSS
FHP P/N
8-733-940-957
641-264
641-264
0-10 VDC
COM
1" STRAP-ON SENSOR
Ω
1" STRAP-ON SENSOR
10K @77°F Type II Thermistor
Ω
10K @77°F Type II Thermistor
WATER PIPE
EWTS
BLOWER HOUSING
FHP P/N 8-733-815-707
SAT FHP P/N 8-733-815-707
2 OR
12" DUCT MOUNTED
IN5 Ω
10K @77°F Type II Thermistor
13
SUPPLY AIR DUCT
IN4
FHP P/N T111-641-258
LWTS
1" STRAP-ON SENSOR
Ω
10K @77°F Type II Thermistor
WATER PIPE
FHP P/N 8-733-815-707
DAMPER
MOTOR
T1
11
T2
-
2-10 V
AUX HEAT
-
12
WHT
0-10 V
BLK
BLK
WHT
8 9
TO Xnet PORT
ON OPN-UCXPIO
CONTROLLER
6
13
4
CONTROLLER IS POWERED BY DEDICATED TRANSFORMER
1
SINGLE SUPPLY AIR TEMPERATURE SENSOR FIELD
TERMINATED @ UI06. PROBE SENSOR PROVIDED FOR DUCT
2 MOUNTED APPLICATIONS (FIELD INSTALLED), STRAP-ON
SENSOR PROVIDED FOR BLOWER HOUSING MOUNTED
APPLICATIONS (FACTORY INSTALLED)
RETURN OR MIXED AIR TEMPERATURE CONTROL SENSORS
3
WIRED AS SHOWN AND FIELD TERMINATED @ UI08
TRANSFORMERS COMMON TERMINALS ARE
4
TIED TOGETHER
2ND VFD PRESENT ON 40 TON THROUGH 60 TON
5
CAPACITY ONLY.
Y3 & Y4 SIGNALS PRESENT ON 4STG UNITS ONLY
6
CSS3, CSS4 AND IEM2 PRESENT ON 4STG UNITS ONLY
7
8 FOR 4 STAGE APPLICATION, P1/P2 INTERLOCK OF BLOWER
MOTOR 2 IN SERIES WITH DI1 ON SECOND VFD
P1 & P2 INTERLOCKS OF THE BLOWER MOTOR(S) MUST BE
9
CONNECTED WITH TERMINALS 10 & 16 OF EACH VFD TO
ENABLE THE SAFETY INTERLOCK OF THE VFD AND TO
PROTECT THE MOTOR (S) FROM THERMAL DAMAGE,
TERMINALS 11 & 12 MUST ALSO BE CONNECTED TOGETHER
10 X5 AND X4 TERMINALS ARE FOUND ON ABB ACH580 VFD'S
ONLY.
OPTIONAL FIELD SUPPLIED MODULATING FRESH AIR
11
DAMPER.
OPTIONAL FIELD SUPPLIED AUXILIARY HEAT.
12
O SIGNAL WILL NOT BE PRESENT ON COOLING ONLY
13
UNITS.
DENOTES FIELD TERMINATED COMPONENTS
DENOTES STANDARD WIRING
DENOTES OPTIONAL WIRING
38
7
12" DUCT MOUNTED
3
Ω
10K @77°F Type II Thermistors
RETURN AIR DUCT
FHP P/N T111-641-258
ABB VFD
ABB VFD
5
TERMINAL CONNECTIONS TERMINAL CONNECTIONS
TERMINATION DETAILS TERMINATION DETAILS
RED RED
YEL YEL
RED
YEL
RED
BRW
8
RED
BRW
10 10