7.8.3.1 X1 power supply
Requirements for the power supply
DANGER
Risk of lightning strike
In the case of supply lines > 10 m, protectors must be installed at the device input in order to
protect against lightning (surge).
The DC power supply must be connected to the ground/shield of the control unit for EMC or
functional reasons. For EMC reasons, this connection should only be made at one point. As
a rule, the connection is provided as standard in the PLC I/Os. If this is not the case in
exceptional circumstances, the ground connection should be made on the grounding rail of
the control cabinet.
See also: "EMC Installation Guideline" Configuration Manual.
Table 7-67 Requirements of the DC power supply
Rated voltage According to EN 61131-2 24 V DC
Voltage range (mean value) 20.4 V DC to 28.8 V DC
Voltage range (dynamic) 18.5 to 30.2 V DC
Voltage ripple peak-to-peak 5% (unfiltered 6-pulse rectifi‐
cation)
Booting time at POWER ON Any
Non-periodic overvoltages ≤ 35 V
Duration of overvoltage ≤ 500 ms
Recovery time ≥ 50 s
Events per hour ≤ 10
Transient voltage interruptions Idle time ≤ 3 ms
Recovery time ≥ 10 s
Events per hour ≤ 10
Digital inputs
The 24 V supplied at X1 are used to supply the 72 digital inputs.
If the internal supply voltage is not used to supply the digital inputs, this can optionally be
replaced by an external power supply (24 V DC). The reference ground of the power supply
source must each be connected with X111, X222, X333, pin 1 (GND). X111, X222, X333, pin
2 (P24OUT) then remains open.
Anschließbare Komponenten
7.8 PP 72/48D PN
PPU and components
198 Manual, 05/2015, 6FC5397-2DP40-3BA4
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