3.5. Connection of the SMALL board with address 4 to control the recovery circuit (optional)
3 - CONNECTIONS
Connector J1
Connector J2
Connector J3 (Analog inputs)
Connector J4 (Digital inputs)
High pressure
transducer of
recovery circuit
(0-5Vdc ratiom.)
Low pressure
transducer of
recovery circuit
(0-5Vdc ratiom.)
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
Suction temp. probe
of recovery circuit
(NTC / 4-20mA)
J1 - power supply
J12 - digital
outputs
J13 - digital
outputs
J14 - digital
outputs
L
L
N
N
M
OUT
+5V ref
230 Vac
M
OUT
+5V ref
HP pressostat
recov. circ.
Compr. thermal
protection
Remote Off
Recovery compressor
Reversing valve
Signal of alarm
M
OUT
+V
shield
SMALL
board
Connection with
the control board
Connector J10
Connector J11
Connector J12 (Digital outputs)
Connector J14 (Digital outputs)
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