
5
Electrical Installation
Installation instructions (all versions)
Operating Instructions – MOVIFIT
®
-FC
37
5.2.6
Meaning of the 24 V voltage levels
MOVIFIT
®
-FC has a total of 4 different 24 V potential levels, each electrically isolated
from the others:
• 1) 24V_C: C = Continuous
• 2) 24V_S: S = Switched
• 3) 24V_P: P = Power section
• 4) 24V_O: O = Option
Depending on the requirements of the application, these can either be isolated, supplied
externally, or connected to each other via a X29 distributor terminal.
1) 24V_C =
Electronics and
sensor supply
The MOVIFIT
®
control electronics and the sensors connected to the sensor supply out-
puts VO24_I, VO24_II, and VO24_III are supplied by 24V_C. Usually, this supply
voltage may not be switched off for operation as MOVIFIT
®
can, in this case, no longer
be addressed via the fieldbus or network, and the sensor signals can no longer be
processed. The unit also requires a certain amount of time to start up when switched on
again.
2) 24V_S =
Actuator supply
The digital outputs DO.. and the actuators connected to them are supplied by 24V_S.
The sensor supply output VO24_IV is also supplied by 24V_S, while the digital inputs
DI12 to DI15 are at the reference potential 0V24_S (as these can be connected to the
outputs on the same connections as an alternative). Depending on the application, the
supply voltage can be switched off for operation to specifically deactivate the actuators
in the system centrally.
3) 24V_P =
Inverter supply
The integrated frequency inverter is supplied with 24 V from 24V_P. Depending on the
application, 24V_P can be supplied by either 24V_C or 24V_S (via jumpers at X29), or
it can be supplied externally. In this case, you must ensure that the integrated frequency
inverter is no longer supplied with 24 V when switching off the voltage. This generally
prompts an error message.
DANGER
During safe disconnection, 24V_P must be connected over a suitable emergency stop
relay or a safety control.
Severe or fatal injuries
• Observe the permissible wiring diagrams and safety conditions in the SEW publica-
tion "Safe Disconnection for MOVIFIT
®
".
Summary of Contents for MOVIFIT-FC
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