User Manual

14
Smart Infrastructure A6V11742346_en--_b
2020-08-24
Technical data
Power supply
Operating voltage AC 110…240 V
AC frequency 47…63 Hz
Power consumption 6 W + 0.07 W for each connected M-bus device
Maximum power consumption 45 W, 45 VA
Vout: DC 24 V, max. 15 VA
Power consumption level converter (in series) ≤3 mA (2 M-bus loads)
Internal fuse PTC resistance and varistor
Fusing of supply lines Circuit breaker Max. 13 A, type B, C, D
per EN 60898
or
Power supply with current limitation at 10 A
Pins
M-bus master (terminals 9 and 10 on the level
converter)
Connections for M-bus devices
and
Connections for the following repeater
M-bus slave (terminals 1 and 2 on the level converter) Galvanically isolated connections to the M-bus web
server or to the previous master level converter if the
level converter is used as a repeater.
Vin LC / Vout LC (terminals
11 and 12 of the level converter) /
(terminals 4 and 5 of the power supply)
Power supply for level converter/repeater
Vout 24 Vdc (terminals 6 and 7 on the power supply) DC 24 V, max. 15 VA
Interface
RS-232 interface (terminals A, B, and C on the level
converter)
Galvanically isolated connections to connect to PC/data
logger as master:
● Connect to a PC:
– Terminal A: TX (PC/data logger receiving line)
– Terminal B: RX (PC/data logger transmission
line)
– Terminal C: GND (interface reference voltage)
● Connection to M-bus web server WTV676..:
– Terminal 3[A] RS-232 with terminal 1[A] web
server
– Terminal 4[B] RS-232 with terminal 2[B] web
server
– Terminal 5[C] RS-232 with terminal 3[C] web
server
RS-485 interface (terminals D, E, and F on the level
converter)
Non-isolated connection for connecting to a PC
● Connections to connect to PC/data logger as
master:
– Terminal D: REF (interface reference voltage)
– Terminal E: D+ (Receive/transmission line
potential +)
– Terminal F: D- (Receive/transmission line
potential -)
M-bus master
Reference standard EN13757-2 (physical layer)
Baud rate 300 bps…9600 bps
Max. number of M-bus devices per level converter 250 (simple M-bus loads)
Max. number of M-bus devices per level converter 250 simple M-bus loads