Carrier 50FC - Low Temperature Burner Protection; Burner Interface Panel

46
14 - CONECTIONS
14.5. Connection of the SMALL board to the control board (optional)
Connector J1
Unit power supply
Connector J2
Sensors power supply
Connector J3 (Analog inputs)
Temperature reading sensors:
B1: return temperature probe of the zone 1 (optional) (1)
B2: return temperature probe of the zone 2 (optional) (1)
B3: return temperature probe of the zone 3 (optional) (1)
B4: return temperature probe of the zone 4 (optional) (1)
B5: outdoor temperature probe (optional) (2)
Connector J4 (Digital inputs)
Status:
DI1: opening status of the supply damper of the zone 1
DI2: opening status of the supply damper of the zone 2
DI3: opening status of the supply damper of the zone 3
This plate is necessary for the management of the zoning of the air
fl ow up to 4 di󰀨 erent zones through dampers (optional).
DI4: opening status of the supply damper of the zone 4
DI7: remote o󰀨
Connector J6
RS485 Fieldbus serial connection with the PC3 control board.
Board address = 11
Connector J10
RS485 Fieldbus serial connection with the “Zone” terminals (up to
4 terminals.
Connector J12 (Digital outputs)
On/o󰀨 control of dampers:
NO1: opening signal of the supply damper of the zone 1
NO2: opening signal of the supply damper of the zone 2
NO3: opening signal of the supply damper of the zone 3
Connector J13 (Digital outputs)
On/o󰀨 control of dampers:
NO4: opening signal of the supply damper of the zone 4
Connector J14 (Digital outputs)
On/o󰀨 control of the unit components:
NO7: signal of alarm
(1) By default, the probes of ambient temperature built-in the zone terminals are used by the control
(2) By default, the probe of outdoor temperature connected on the main control board (B2) is used by the control
SMALL board with address 11
RX-/TX-
RX+/TX+
GND
Vout
RX-/TX-
RX+/TX+
GND
C1
NO1
NO2
NO3
C2
NO4
NO5
NO6
NO7
C3
NC7
G
G0
B1
B2
B3
B4
B5
B6
B7
GND
+Vdc
+Vdc
GND
+5 Vref
GND
Y1
Y2
Y3
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DIC1
J2 - probe
power supply
J3 - analogue
inputs
J4 - digital
inputs
J5 - analogue
outputs
J6
J7
J8
J9
J10
J11
J1 - power supply
J12 - digital
outputs
J13 - digital
outputs
J14 - digital
outputs
L
L
N
N
230 Vac
Remote Off
Signal of alarm
SMALL
board
Serial connection with
the “zone” terminals
Return T probe of
zone 1 (optional)
Return T probe of
zone 2 (optional)
Return T probe of
zone 3 (optional)
Return T probe of
zone 4 (optional)
Outdoor T probe
(optional)
Opening status, damper of zone 1
Opening status, damper of zone 2
Opening status, damper of zone 3
Opening status, damper of zone 4
Opening signal, damper of zone 1
Opening signal, damper of zone 2
Opening signal, damper of zone 3
Opening signal, damper of zone 4
RX-/TX-
RX+/TX+
GND
shield
Serial
connec.
with the
control
board
Serial card RS485
shield