6 Interfaces
6.1 "Remote" interface
NOTICE
Property damage on the electronics
Separating all plug-and-socket connections within the bus system with voltage supply switched on
may lead to the destruction of electronic components.
► Always disconnect the voltage supply before removing the connecting plug.
► After switching off the power supply pack, wait until the residual load has dispersed completely
before disconnecting the plug-and-socket connection.
The 15-pin sub-D connection with the "remote" designation offers the possibility to operate the electron-
ic drive unit via remote control. The following specifications are the factory settings for the electronic
drive unit. They can be configured with the Pfeiffer Vacuum parameter set.
► Utilize the screened plug and cable.
1
8
9
15
→
→
Fig. 6:
Pin assignment of the D-Sub socket, 15-pin
Pin Function
Description, factory setting
1
+24 VDC input
Voltage supply for drive and interface
2
DI access request
V+: Control via DIs, --> GND/open: Control unlocked
3
DI1
V+: Rotation speed setting mode, --> GND/open: no rotation speed set-
ting mode
4
DI2
Only valid for vacuum pumps with a solenoid valve; the following then ap-
plies:
V+: Valve released, --> GND/open: Valve closed
5
DI pumping station V+: Vacuum pump on, --> GND/open: Vacuum pump off
6
DI standby
V+: standby, --> GND/open: no standby
7
V+
24 V output
8
DO1
GND: Error, V+: no error
9
DO2
GND: Vacuum pump off, V+: Vacuum pump on
10
n.c.
11
n.c.
12
n.c.
13
RS-485
D+
14
RS-485
D-
15
Ground (GND)
Ground connection of the voltage supply; reference ground for all digital
inputs and outputs
Tbl. 5:
Plug arrangement of the D-Sub socket, 15-pin
6.1.1 Voltage supply
24 V DC input:
The voltage supply is carried out using a connecting cable from the Pfeiffer Vacuum
accessories or using a cable provided by the customer.
●
Pin 1
: +24 V DC
●
Pin 15
: Earth (GND)
Interfaces
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