Siemens SIMATIC S7-1500/ET 200MP Manual page 21

Electrical isolation
Electrical isolation of channels
Between the channels
Between the channels, in groups of
Between the channels and the backplane bus
Permitted potential difference
Between different circuits
Isolation
Isolation tested with
Distributed mode
Prioritized startup
Dimensions
Width
Height
Depth
Weights
Weight, approx.
Miscellaneous
Note:
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
Manual, 09/2014, A5E32363114-AB
Technical specifications
6ES7521-1BH10-0AA0
No
16
Yes
75 VDC / 60 VAC (basic isolation)
707 VDC (type test)
Yes
25 mm
147 mm
129 mm
230 g
Supplied incl. 40-pin push-in front connector
21