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. 15:
Pin assignment of the D-Sub socket, 15-pin
Pin Function
Description, factory setting
1
n.c.
2
DI access request
V+: Control via DIs, --> GND/open: Control unlocked
3
DI1
V+: Rotation speed setting mode, --> GND/open: no rotation speed
setting mode
4
n.c.
5
DI pumping station
V+: Vacuum pump on, --> GND/open: Vacuum pump off
6
DI stand-by
V+: Stand-by, --> GND/open: no stand-by
7
+24 V DC output (V+) Reference voltage for all digital inputs (5 W max.)
8
DO1
GND: Error, V+: no error (current max. 80 mA)
9
DO2
GND: Vacuum pump off, V+: Vacuum pump on (current max. 80 mA)
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 digi-
tal inputs and outputs
Tbl. 6:
Plug arrangement of the D-Sub socket, 15-pin
6.1.1 Voltage output
24 V DC output / pin 7:
Inputs 2 to 6 are activated if they are connected to pin 7 (active high) with +24
VDC. They can also be activated via an external SPS. The functions are deactivated by "SPS high lev-
el" and by "SPS low level".
● PLC High level: +13 V to +33 V
● PLC Low level: -33 V to +7 V
● Ri: 7 kΩ
● I
max
< 200 mA
Interfaces
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