Manualshelf

Operating Instructions

ManualsBrandsSiemens ManualsMetering devicesHead meter UH50..
123456
Note: Detailed information for the parameterization
with the service software can be found in the UltraAs-
sist user manual.
Standard
EN 1434-3; EN 13757-2; EN 13757-3
Protocol
EN 60870-5
Electrical isolation
• from the meter
yes
Connection capacity
rigid or flexible, 0.25 … 0.75 mm²
flexible with wire end ferrule, 0.25 … 0.75 mm²
Polarity
any
Voltage
50 V DC maximal
Current consumption
1 M-bus load (1.5 mA)
Baud rate
300, 1200, 2400, 4800 or 9600
Interface description
see TKB3448
Number of pulse inputs
2
Life of the module battery
5 years of operation
*)
+ 1-year storage duration
*) if the M-bus voltage is applied for at least 90%
of the operating time, the battery life increased to
10 years
Standard for pulse inputs
Class IB per EN 1434-2
Frequency
max. 10 Hz
Pulse duration (low)
≥ 50 ms
No-pulse duration (high)
≥ 50 ms
Pulse value
0.01 liters / pulse, in steps of 10.000.00 liters /
pulse, in steps of 0.01 liters / pulse
Display and output
in m³, 7-digit; acc. to parameter setting with or
without 1 decimal place
Polarity
yes, must be correct if transmitter is of type “open
collector”
Electrical isolation
• from the meter
yes
• from the M-bus inputs
no
Output voltage
approx. 3.3 V
Internal resistance
approx. 1 MΩ
Source current
approx. 3 µA
Pulse input closed (low)
• Switching threshold low
< 0.2 V
• Resistance
< 50 kΩ
Pulse input open (high)
• Switching threshold high
unconnected collector
• Resistance
≥ 6 MΩ
Connection
Strip-back length 5 mm
Connection capacity
rigid or flexible, 0.25 … 0.75 mm²
flexible with wire end ferrule, 0.25 … 0.75 mm²
Permissible cable length
max. 10 m
As accessory:
WZU-MB G4 or WZU-MI
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