en – Original instructions
27
Item
Terminals Ref. Description
Notes
Fault signal
C
4 COM - error status relay
Closed: error
Open: no error or unit off
NO
5 NO - error status relay
Auxiliary Voltage
Supply
15V
6 Auxiliary voltage 15 VDC
15VDC, Ʃ max. 100 mA
Analog input
0-10V
P2IN/S+ 7 Actuator mode 0-10 V input
0÷10 VDC
P2C/S-
8 GND for 0-10 V input
GND, electronic ground (for S+)
External Pressure
sensor [also
Differential]
P1+
9 Power supply external 15
VDC
15VDC, Ʃ max. 100 mA
P1-
10 External sensor 4-20 mA input
4÷20 mA
External Start/Stop
START 11 External ON/OFF input reference Default short circuited. Pump is enabled
to RUN
STOP
12 External ON/OFF input
External Lack of
Water
LOW+ 13 Lack water input
Default short circuited.
Lack of water detection: enabled
LOW-
14 Low water reference
Communication
Bus
B1
15 RS485 port 1: RS485-1N B (-)
ACT, HCS control mode: RS 485 port1 for
external communication
MSE, MSY control mode: RS 485 port 1
for multi-pump systems
A1
16 RS485 port 1: RS485-1P A (+)
GND
17 Electronic GND
Communication
Bus
B2
18 RS485 port 2: RS485-2N B (-) active
only with optional module
RS 485 port2 for external
communication
A2
19 RS485 port 2: RS485-2P A (+) active
only with optional module
GND
20 Electronic GND
Fault signal
C
25 COM - error status relay
Closed: error
Open: no error or unit off
In case of power cables: use the M20
cable gland
NO
24 NO - error status relay
Motor running
signal
C
23 Common contact
Closed: motor in operation
Open: motor not in operation
In case of power cables: use the M20
cable gland
NO
22 Normally open contact
Auxiliary Voltage
Supply
15V
21 Auxiliary voltage 15 VDC
15VDC, Ʃ max. 100 mA
Analog input
0-10V
S+
20 Actuator mode 0-10 V input
0÷10 VDC
S-
19 GND for 0-10 V input
GND, electronic ground (for S+)
External Pressure
sensor [also
Differential]
P1+
18 Power supply external 15
VDC
15VDC, Ʃ max. 100 mA
P1-
17 External sensor 4-20 mA input
4÷20 mA
External pressure
sensor
P2+
16 Power supply external 15
VDC
15VDC, Ʃ max. 100 mA
P2-
15 Sensor 4-20 mA input
4÷20 mA
External Start/Stop
Start
14 External ON/OFF input
Default short circuited. Pump is enabled
to RUN
Stop
13 External ON/OFF input reference
External Lack of
Water
LoW+ 12 Lack water input
Default short circuited. Lack of water
detection: enabled
LoW-
11 Low water reference
Communication
Bus
B2
10 RS485 port 2: RS485-2N B (-) active
only with optional module
RS 485 port2 for external
communication
1~
3~
