Installation
53
300314330_002_C7 - 05/2021 - © Leybold
DV 450/650 and 450/650-r
Connecting the Purge Gas Module Electrically
Connect the
■
purge gas pressure switch and
■
solenoid valves
to your system control.
Connect the solenoid coils for the purge gas valves to your system control.
The plugs are on the coils on delivery.
Data for the solenoid coils
Voltage
24 V DC
Power consumption
8 W
Type of protection (DIN 40050)
IP 65
Cable screw connection
Pg 9
MEMOBUS/Modbus
The frequency converter is equipped with a serial RS 485 interface with
MEMOBUS/Modbus (RTU) protocol. Further details are available on request.
Fig. 3.13 Option: Wiring with external power supply
SINK
DIP switch S3
SOURCE
+ 24 VDC
GND
Switch to source
(Control via
external source)
Exhaust pressure switch*
Fault reset*
Baseblock
Temperature limiter*
Digital Input*
Forward Run / Stop
1
2
4
3
+
–
0V
S1
UB
R
L
Signal
Pin
UB (24VDC max. 125mA)
1
0V
3
S1 (max. 100mA)
4
Fig. 3.12 Circuit diagram for the purge gas pressure switch
