Diehl Metering SCYLAR INT 8, Installation And User Manual

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4.4.2 Function modules
Pulse input module
 The two pulse inputs can be programmed independently of each other with values of 1, 2.5, 10,
25, 100, 250, 1000 or 2500 litres per pulse.
 Possible units are all the energy units available in the meter, such as kWh/pulse and GJ/pulse,
but also volume units like l/pulse, m³/pulse or no units.
 The input frequency is in the range 0 – 8 Hz, min. pulse duration 10 ms
 Input resistance 2.2 MΩ
 Terminal voltage 3 V DC
 Cable length ≤ 10 m
 Electrical isolated
Pulse input 1 is marked “I1 -
┴
” on the module and “IN1” in the display, pulse input 2 “I2 -
┴
” on the
module and “IN2” in the display.
Fig. M pulse input module
Pulse output module
 External power supply 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 ≤ 200 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
calculator for heating or cooling)
 At a calculator for heating 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 decadal value programmable
 Floating contact (electrically isolated)
 The lifetime of the battery which is mounted on the module is 12 years.