Carrier 50FC - Burner First Level Menu Navigation; Burner Fault Reset Procedures; Burner Fault Analysis and Remedies

47
M(G0)+(G)
Temp. or
RH+Temp.
probe
Tx-
GND
Tx+
120:
RS485 probes configuration:
Tx-
GND
Tx+
M(G0)+(G)
1
ON
5 6 7 8 2 3 4
Dip 1-5 Address On (128-159)
Dip 6-7
On-On =ModBus 1,8,E,1
= 19200 bps
On = 9600 bps
Tx-
GND
Tx+
M(G0)
+(G)
GND
24 Vac
M(G0)+(G)
M(G0)+(G)
+(G)
M(G0)+(G)
Supply probe
(calculation
of capacities)
Ambient probe of
T or T+RH No.1:
Address: 128
Modbus 1, 8, N, 2
19200 bps
1
ON
5 6 7 8 2 3 4 1
ON
5 6 7 82 3 4
Ambient probe of
T or T+RH No.2:
Address: 129
Modbus 1, 8, N, 2
19200 bps
Ambient probe of
T or T+RH No.3:
Address: 130
Modbus 1, 8, N, 2
19200 bps
1
ON
5 6 7 8 2 3 4 1
ON
5 6 7 82 3 4
Ambient probe of
T or T+RH No.4:
Address: 131
Modbus 1, 8, N, 2
19200 bps
Mixing enthalpic
probe:
Address: 132
Modbus 1, 8, N, 2
19200 bps
1
ON
5 6 7 8 2 3 4 1
ON
5 6 7 82 3 4
Supply enthalpic
probe:
Address: 133
Modbus 1, 8, N, 2
19200 bps
M(G0)+(G)
Temp. or
RH+Temp.
probe
Tx- GND Tx+
Temp. or
RH+Temp.
probe
Tx-
GND
Tx+
Temp. or
RH+Temp.
probe
Tx-
GND
Tx+ Tx-
GND
Tx+ Tx-
GND
Tx+
120:
No.2 No.3 No.4No.1
Mixing probe
(calculation
of capacities)
C1
NO1 NO2 NO3
C4
NO4 NO5 NO6
C8
NO8 NO9
NO10 NO11 NO12
DI1 DI2 DI3 DI4 DI5 DI6 DI7 GND B1 B2 B3 B4 B5 B6 B7 GND +Vdc GND Y1 Y2 Y3 Y4 B8 B9 B10 B11 B12 GND DI8 DI9 DI10 GND
NO7
C7
NC7
TAM
PT
EEV1
EEV2
FieldBus1
Display port2
Ethernet
Control
Stand-by
BMS card
FieldBus2
/ BMS
+5VR GND+Vdc
Field bus
BMS
Micro
USB
Display port1
/ BMS
FieldBus2 / BMS
configuration
“50FC”
Important: It is recommended to insert an electrical resistance of 120Ω, between TX+ and TX- at the output of the control board and on the final
component of the RS485 network, to avoid potential problems of communication.
14.6. Serial connection of RS485 probes to the Field-bus of the control board (optional)
14 - CONECTIONS
The following serial probes can be connected on the RS485 Field-bus, confi gured with di󰀨 erent addresses:
 1 to 4 probes of ambient temperature or temperature + humidity.
 Enthalpy probes on the mixing air and the supply air for calculation of the cooling and heating capacities.