Switching on the vacuum pump
1. If required, switch the vacuum pump on in each pressure range in one of the 3 possible ways:
– using a mains switch on the power supply pack with respective bridges on the 15-pin D-Sub
socket
– via the peripheral devices DCU/HPU
– using the PLC control unit on the 15-pin D-Sub socket
2. Allow the vacuum pump to warm up prior to process start, with the vacuum connection closed.
– The warm-up time depends on the ambient temperature and may take between 15 and 30 mi-
nutes.
The vacuum pump achieves the specified throughput and ultimate pressure values once the operating
temperature has been reached.
8.3 Configuring the connections with the Pfeiffer Vacuum parameter set
The electronic drive unit is pre-configured with the factory default basic functions and is ready for opera-
tion. For individual requirements, you can configure most connections for the electronic drive unit with
the parameter set.
8.3.1 Configuring the digital outputs
Option
Description
1 = No error
active, with trouble-free operation
2 = Error
active, if the error message is active
5 = Set rotation speed reached
active, once the set rotation speed is reached
6 = Pump on
active, if pump on, motor on and no error
9 = always 0
GND for the control of an external device
10 = always 1
V+ for the control of an external device
11 = Remote
active, if the remote priority is active
Tbl. 13:
Configure parameters [P:019] and [P:024]
Procedure
► Perform the configuration according to the table.
8.3.2 Selecting the interfaces
Option [P:060]
Description
1 = remote
Operation via connection "
remote
"
2 = RS-485
Operation via connection "
RS-485
"
4 = PV.can
For service purposes only
32 = Keys on the front panel
Manual operation
Option [P:061]
0 = off
Interface selection can be set via [P:060].
1 = on
Interface selection locked
Tbl. 14:
Parameters [P:060] and [P:061]
Procedure
► Select the interface according to the table.
8.4 Operating modes
The following operating modes are possible:
● Operation without control unit
● Operation via an external control unit
● Operation via RS-485 and Pfeiffer Vacuum display and control unit or PC
Operation
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