
6
Electrical Installation
Installation instructions (all versions)
Operating Instructions – MOVIFIT
®
SC
33
6.2.6
Meaning of the 24 V voltage levels
MOVIFIT
®
SC has a total of 3 different 24 V potential levels, which are electrically
isolated from each other:
• 1) 24V_C: C = Continuous
• 2) 24V_S: S = Switched
• 3) 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
outputs VO24_I, VO24_II, and VO24_III are supplied by 24V_C. This supply voltage
should usually not be switched off for operation because the MOVIFIT
®
can, in this case,
no longer be addressed via the fieldbus or network, and the sensor signals can no longer
be processed. The device also requires a certain amount of time to accelerate fully when
restarted.
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 .. 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 specifically for deactivating the actua-
tors in the system centrally.
3) 24V_O =
Option supply
The integrated option card and the sensor/actuator interfaces available on it are
supplied by 24V_O.
Depending on the application, the 24V_O can be supplied by 24V_C or 24V_S (via
jumpers at X29) or externally. In this case, you must ensure that the entire option card
with the connected sensors and actuators is no longer supplied when voltage is discon-
nected. Otherwise, this generally prompts an error message.
Connection of
voltages
Both voltages 24V_C and 24V_S can be connected via terminal X20 with a large cable
cross-section and further looped to the next unit as "24V power bus". The voltage
24V_O should be connected to terminal X29.
NOTE
Connection examples can be found starting on page 79.
Содержание MOVIFIT SC series
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