20
Pulse output module
External power supply necessary Vcc = 3 – 30 V DC
Output
current
≤
20 mA with a residual voltage of
≤
0.5 V
Open collector (drain)
The module consists of 2 programmable pulse outputs
Output
1:
Frequency:
≤
4 Hz
Pulse duration: 125 ms ±10 %
Pulse
break:
≥
125 ms -10 %
Output
2:
Frequency
≤
100 Hz
Pulse duration/pulse break: ~1:1
As a standard the output 1 will give an energy pulse, the output 2 will give a volume pulse (at
heat meter or cooling meter)
At a heat meter with cooling tariff the output 1 will give an heating energy impulse and the
output 2 a cooling energy impulse (standard)
The pulse value depends on the digits after the comma of the corresponding display unit. As a
standard the value is always the last digit of the display.
The volume pulse value is freely programmable
Floating contact (electrically isolated)
The lifetime of the battery which is mounted on the module is 12 years.
Fig. M
Connection diagram for one pulse output
1
connection of the external power supply V
CC
2 Pulse
output
3 GND
4
Pulse output module
5 Energy
meter
6 External
connection
To use the pulse output module an external power supply is necessary. Via a resistor the current has
to be limited to max. 20mA. At point 2 in the diagram the pulse will be given.
The outputs are marked “01 -
┴
” and “02 -
┴
” on the terminal and “Out1” and “Out2” in the display.
Fig. N
Pulse output module