Siemens ET 200SP Manual page 19

Connecting
3.1 Terminal assignment and schematic circuit diagram
The following figure shows the wiring of the technology module in one-channel operation.
Figure 3-2
Note
Load wiring resistance
In one-channel operation, the cables for the DQ0.A and DQ1.A connections must have
identical resistance (length and cross-section) to achieve optimal current distribution
between the two outputs and to prevent errors in current measurement.
In "PWM with DC motor" mode, the cables for the DQ0.B and DQ1.B terminals must also
have identical resistance.
Note
Overheating due to unsuitable loads
A high-speed output generates very steep edges. This produces a very severe load change
of the connected load, which can result in overheating of the load under high switching
frequencies.
The connected load must therefore be approved for high frequencies.
18
Wiring in one-channel operation (parallel connection)
Technology Module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 05/2019, A5E35061186-AB