19
If the rotor overheat protection is active the warning message
“
FF003355
” is shown and the red LED illuminates.
In accordance to the adjustment of
[[PP::002277]]
the drive power
decreases to the selected power rotation curve.
The full drive power is available as soon as the overheat risk
is eliminated.
6.6. Pump Motor OFF/ON
The turbo pump can be switched on and off separately whilst
the pumping station is in operation.
➡ Select «
002233 :: MMoottoorr TTMMPP
».
➡ Select «
OOFFFF
», or «
OONN
».
6.7. Rotation Speed Setting Mode (only Turbo
Pumps)
Select rotation speed setting mode when you wish to reduce
the volume flow rate of the pump. The pressure ratio of the
pump falls exponentially with the rotation speed.
Speed preset in rotation speed setting mode
➡ Call «
779944 :: PPaarraamm sseett
», select «1».
➡ Select «
770077 :: TTMMPPrroott sseett
».
➡ Adjust the speed within the range 20-100 %.
Operating mode of turbo pump
➡ Call «
002266 :: OOppMMooddee TTMMPP
».
➡ Select «
11
» for rotation speed setting mode.
Standby mode is ineffective in rotation speed
setting mode. Rotation speed setting mode can
also be set by means of the remote control or
the serial interface.
At operations below 50 % x f
nom
pump shut-
down due to lubricant deficiency is possible.
Turbo pumps with integral lubricant pump are initially accele-
rated to 60 % of their nominal rotation speed in standby mode,
even if the set standby speed is < 60 % x f
nom
.
6.8. Switching Off the Pump
➡ Press the key on the front panel. Alternatively, switch
off the pump using the remote control or the interface.
After the pump has been switched off, the rotation speed
sinks to 0 Hz.
6.9. Remote control
If power failure occurs during operation, the
turbo pump automatically restarts once power
returns.
The following functions can be controlled using remote
control (see also “Plug Arrangement REMOTE” table):
– Standby rotation speed ON/OFF
– Pumping station ON/OFF
– Motor TMP ON/OFF
– Vent release ON/OFF
– Sealing gas ON/OFF
– Remote priority ON/OFF
– Rotation speed input (20-100 % of the nominal
rotation speed
[[PP::331155]]
corresponds to 2-10 V DC
voltage)
– Malfunction acknowledgment
If a voltage signal in a range of 2-10 V DC is
connected, remote Pin 7 “Rotation speed input”
has always priority.
Operating Modes With Remote Control
There are three different options for remote control with
different priorities for the functions:
Standard remote control
➡ Set
««002288:: OOppMMooddee RReemm»»
to
««00»»
.
The digital switching functions are activated through “SPS
High level”
1)
. Activated individual functions cannot be
changed via the interface. Individual functions deactivated
with remote control can be operated using the interface.
–> The settings are saved.
1) SPS-High level: +13 V bis +33 V
SPS-Low level: -33 V bis +7 V
Ri: 7 kΩ
Remote Control Priority “ON”
For certain applications, such as SPS control, the remote
control functions can be set to have priority.
➡ Set
««002288:: OOppmmooddee RReemm»»
to
««11»»
, prepare priority function
➡ Set connection between Pin 1 and Pin 14 to “remote” or
“SPS high”.
The priority for remote control is now active.
The unit can now only be controlled via “Remote”.
Equivalent functions can no longer be operated via the
RS-485 interface.
–>The settings are saved.
The following functions are activated with “SPS high level”
and deactivated with “SPS low level”:
– Motor ON/OFF
– Standby rotation speed ON/OFF
– Pumping station ON/OFF
– Vent release ON/OFF
– Sealing gas ON/OFF
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