User Manual

41
Smart Infrastructure
CE2N5324en
2019-06-27
M-bus module WZU-MI
Part of pulse input
● Source current
● Pulse input closed (Low)
– Switching threshold low
– Resistance
● Pulse input open (High)
– Switching threshold high
– Resistance
● Max. cable length
<0.2 V
<50 kΩ
Collector not fully activated
≥6 MΩ
10 m
BACnet module
WZU-485E-BAC
● Communication protocol
● Supported services
● BACnet
TM
address range
● Transmission rate
● Data update
● HW network connection
● RS-485 terminating resistance
● Alternating current
● Direct current
● Power consumption
● Recommended fusing
● Galvanic isolation
– From meter:
– From the RS-485 network
BACnet MS/TP (RS-485) per ASHRAE 135
and ISO 16484-5
BACnet Application Specific Controller
(B-ASC), BACnet Master Mode
1 … 127
9600 to 76800 bps
Default: 38400 bps
Standby: 60 min.
Operating: After each query, max. every 10
seconds
Protected against short overload
User external resistance (=> 120 Ω)
AC 16 … 28 V
DC 10 … 32 V
< 50 mA (typically < 20 mA at 24 V)
100 mA, slow
Yes
No
Modbus module
WZU-485E-MOD
● Communication protocol
● ModBus® address range
● Transmission rate
● Modbus parity
● Data update
● HW network connection
● RS-485 terminating resistance
● Alternating current
● Direct current
● Power consumption
● Recommended fusing
Modbus RTU5
0 … 247
2400 to 19200 bps
Default: 9600 bps
Even
Standby: 60 min.
Operating: After each query, max. every 10
seconds
Protected against short overload
User external resistance (=> 120 Ω)
AC 16 … 28 V
DC 10 … 32 V
< 50 mA (typically < 20 mA at 24 V)
100 mA, slow