Lowara e-HME, Installation, Operation And Maintenance Manual

Page: 24 / 48

en
– Original instructions
24
sensor [also
Differential]
VDC
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 Low 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 port 2: RS485-
2N B (-) active only with optional
module
RS 485 port2 for external
communication
A2 19
RS485 port 2: RS485 port 2: RS485-
2P A (+) active only with optional
module
GND 20 Electronic GND
Fault signal
C 25 COM - error status relay
In case of power cables: use the M20
cable gland
NO 24 NO - error status relay
Motor running
signal
C 23 Common contact
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 Low water input
Default short circuited Lack of water
detection: enabled
LoW- 11 Low water reference
Communication
Bus
B2 10
RS485 port 2: RS485 port 2: RS485-
2N B (-) active only with optional
module
RS 485 port2 for external communication
A2 9
RS485 port 2: RS485 port 2: RS485-
2P A (+) active only with optional
module
GND 8 Electronic GND
Communication
Bus
B1 7 RS485 port 1: RS485-1N B (-) ACT, HCS control mode: RS 485 port 1 for
external communication
Control mode MSE, MSY: RS 485 port 1
for multi-pump systems
A1 6 RS485 port 1: RS485-1P A (+)
GND 5 Electronic GND
3~