Differential current input channels 4
Measuring range DC -25.6 mA to +25.6 mA
Fault < 0.5 % of the measuring range
Input impedance 140 Ω
Conversion principle Delta-sigma (16 bit)
Permissible potential difference
between channels
DC 20 V
Galvanic separation from ground/
housing
DC 700 V
Permissible overload DC 100 mA continuously
Measured-value repetition 200 ms
Inputs for Optical Sensors for Arc Protection (via Module ARC-CD-3FO)
Connector type AVAGO AFBR-4526Z
Number of transceivers 3
Fiber type Plastic Optical Fiber (POF) 1 mm
Receiver
Maximum -10 dBm ± 2 dBm
Minimum -40 dBm ± 2 dBm
Spectrum 400 nm to 1100 nm
Attenuation In the case of plastic optical fibers, you can expect a path attenuation of
0.2 dB/m. Additional attenuation comes from the plug and sensor head.
Optical budget
20
Minimal 25 dB
Analog sampling rate 16 kHz
ADC type 10-bit successive approximation
Transmitter
Type LED
Wavelength λ = 650 nm
Transmitter power Minimum 0 dBm
Maximum 2 dBm
Numerical aperture
0.5
21
Signal rate connection test 1 pulse per second
Pulse duration connection test 11 μs
High-Speed Measuring-Transducer Inputs, Voltage/Current (via IO210, IO212)
NOTE
Current and voltage must not be connected at the same time to one measuring-transducer input. Instead,
only connect either current or voltage. For EMC reasons, do not connect a line to an unused input (current
or voltage).
Use shielded cables.
20
All values in combination with sensors approved by Siemens.
21
Numerical aperture (NA = sin θ (launch angle))
Technical Data
12.1 General Device Data
788 SIPROTEC 5, Merging Unit 6MU85, Manual
C53000-G5040-C074-1, Edition 01.2020
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