Landis+Gyr CU-B1, User Manual

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6/30 Device description
© Gyr D000011142 en k – E65C CU-B1, B2, B4 – User Manual
1.2 Technical data
1.2.1 Inputs and outputs
Pulse inputs

Type: S0 interface

Application: Version CU-B1

Standard: IEC 61393 / DIN 43864

Operating conditions:
– Rated voltage ...................................................................... 24 V DC
– Max. voltage ....................................................................... 27 V DC
– Condition "On" ................................................. min. 10, max. 27 mA
– Current Condition "Off" ................................................... max. 2 mA
– Pulse length ..........................................................................

30 ms
– Max conductor length depending on environment
........................................ and connecting cable, normally up to 0.5 m
– Insulation resistance to meter ....................... 4 kVAC / 50 Hz, 1 min
............................................................ (creep distance min. 6.2 mm)
RS485 interface

Type: symmetric, serial, asynchronous, bi-directional
interface

Application: Versions CU-B1, CU-B2, CU-B4

Standard: ISO-8482

Operating conditions:
– Signal condition binary 1 .................. difference voltage < -0,2 V DC
– Signal condition binary 0 ................... difference voltage > 0,2 V DC
– Max. bit rate .................................................................... 38'400 bps
– Max. number of slaves .................................................................. 31
– Max conductor length
............depending on environment and connecting cable up to 300 m
– Insulation resistance to meter ....................... 4 kVAC / 50 Hz, 1 min
............................................................ (creep distance min. 6.2 mm)