10
Connection "remote"
5.2 Operation via "
remote
" connection
+24 V DC* Output /
Pin 1
Inputs 2 - 6 and the connections to Pins 10, 13, 14 are activated by connecting them with
+24 V DC to Pin 1 (active high). They can also be activated via an external PLC. The
functions are deactivated by "PLC high level" and by "PLC low level".
●
PLC high level: +13 V to +33 V
●
PLC low level: -33 V to +7 V
●
Ri: 7 k
Ω
●
I
max
< 210 mA (with RS-485, if existing)
Inputs
The digital inputs at connection "
remote
" are used to connect various functions of the
electronic drive unit. Functions are assigned to the inputs DI1 - DI2 ex factory. These can
be configured via interface RS-485 and the Pfeiffer Vacuum parameter set.
DI1 (Enable venting) / Pin 2
V+ :
Venting is enabled (venting according to venting mode)
open: Venting locked (no venting is performed)
DI Motor pump / Pin 3
After Pin 4 (pumping station) is activated and the electronic drive unit successfully com-
pletes the self-test, the turbopump is placed into operation. During operation, the tur-
bopump can be switched off and on again, while the pumping station remains switched
on. The turbopump is not vented thereby.
V+ :
Turbopump motor on
open: Turbopump motor off
DI Pumping station / Pin 4
Connected pumping station components (e.g. backing pump, venting valve, air cooling
unit) are triggered and, with Pin 3 (motor) simultaneously activated, the turbopump is
placed in operation. Any ongoing error messages are reset when their cause has been
eliminated.
V+ :
Malfunction acknowledgement and pumping station on
open: Pumping station off
DI Standby / Pin 5
In standby mode, the turbopump operates at a specified rotor speed < nominal rotation
speed. Factory setting and recommended operation are 66.7 % of the nominal rotation
speed.
V+ :
Standby activated
open: Standby off, operation at nominal rotation speed
CAUTION
Increased wear and damage due to incorrect operation
Active magnetic bearings require a constant power supply. The motor acts as a gener-
ator and supplies the drive electronics in the event of a power failure. Below a speed of
approx. 6500 rpm, the kinetic energy of the rotor will no longer be sufficient to supply the
magnetic bearings. The drive electronics will switch off completely. The rotor will run
down audibly in the safety bearings.
Do not switch off the pump by disconnecting the mains power supply.
Содержание TM 700 DN
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