X1 Power Supply - Siemens PPU 26x.3 series Manual

7.8.3.1

X1 power supply

Requirements of the DC power supply
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.
Rated voltage
Non-periodic overvoltages
Transient voltage interruptions Idle time
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 VDC). 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.
Digital outputs
To supply (24 VDC) the digital outputs, an additional external power supply source is required.
The power supply is connected to terminals X111, X222 and X333 via pins 47, 48, 49 and 50
(DOCOMx). Ground pins must be connected to a common chassis ground.
PPU and components
Manual, 10/2015, 6FC5397-2DP40-5BA3
DANGER
7.8 PP 72/48D PN and PP 72/48D 2/2A PN
According to EN 61131-2
Voltage range (mean value)
Voltage range (dynamic)
Voltage ripple peak-to-peak
Booting time at POWER ON
Duration of overvoltage
Recovery time
Events per hour
Recovery time
Events per hour
Connectable components
24 VDC
20.4 VDC to 28.8 VDC
18.5 VDC to 30.2 VDC
5% (unfiltered 6-pulse rectifi‐
cation)
Any
≤ 35 V
≤ 500 ms
≥ 50 s
≤ 10
≤ 3 ms
≥ 10 s
≤ 10
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