Interface Technical Parameters - Apator ELF Technical Description

Version 1: M-BUS + 4 pulse IN
M M
IN4 M IN2
10 9 8 7 6
Version 3: 4 pulse IN
M
M IN4 M IN2
10 9 8 7 6
where:
IN1, IN2, IN3, IN4 are the pulse input terminals;
M are the pulse input terminals connected to the interface common;
M-BUS is the I/O for connection with the M-Bus line (any wiring connection sequence is allowed);
NPN transistor symbol is the pulse output;
NC is spare, i.e. not used in the given module version.

7.1.2. Interface technical parameters

The table below shows the technical parameters of individual interface blocks
Interface parameters
Enclosure
Operating temperature
Power supply
M-BUS - optional
Maximum voltage
Maximum interface current consumption
Wire insulation voltage rating
Maximum wire length in network
Maximum no. of interfaces in network
Baud rate
Maximum cross section of supply wires
Recommended M-Bus cable
Maximum recommended readout frequ-
ency (at 2400 bauds)
Internal interface register refresh interval
IN3
IN4 M M-BUS
5 4 3 2 1
M-Bus
Master
NC NC
IN1 M IN3
5 4 3 2 1
Version 2: M-BUS + 2 pulse IN + 1 pulse OUT
10 9
Vcc
GDN OUT
Version 4: 3 pulse IN + 1 pulse OUT
10 9
Vcc
GND OUT
Integrated with the heat meter main enclosur
by 2 snap fasteners; electrical connection:
2x5 pin (2.54 mm matrix)
ºC
M-Bus interfaces are powered
by the transmission lines
V
mA
V
m
depending on the permissible converter load
Baud 300, 600, 1200, 2400, 4800, 9600
mm²
YnTKSY 1x2x1,0 mm
s
60 (the register refresh interval is the time
s at which M-Bus polls the heat meter for the
actual register status)
- 19 -
M IN2 M IN1
8 7 6 5 4
M-Bus
Slave
M IN2 M IN1 M IN3
8 7 6 5 4
0 ÷ +55
42
2
> 500
< 1000*
< 1,5
900
M-BUS
3 2 1
M-Bus
Master
NC NC
3 2 1