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Chapter 5: Connecting
Pulse Counter
Pulse counter input parameters are as follows:
• Adjustable threshold as above
• Input impedance as above
• Pulse length min. 1 ms, max. frequency: 500 Hz
• Max. number of pulses: 2 147 483 647 (Long)
• Adjustable digital filter
The following table describes how to use pulse counter input.
Table 5-13. Pulse countter input.
Energy meters S0 interface pulse counter
Energy meter
S G
S0+
S0-
I
max
= 20 mA
Many meters have pulse outputs, including electric meters (single phase,
3-phase), gas meters, water flow meters, etc. For an electric meter, a pulse
output corresponds to a certain amount of energy passing through the
meter (kWhr/Whr). For single-phase domestic electric meters, each pulse
usually corresponds to 1 Whr (1000 pulses per kWhr). For higher power
meters (often three-phase), each pulse corresponds to a greater amount of
energy eg. 2 Whr per pulse or even 10 Whr per pulse.
For pulse outputs from third-party energy meters, S0 interface defines a
simple galvanically isolated open-collector output channel.
V.oltage Input
Voltage input parameters are as follows:
• Range 0 to 2.5 VDC, 0 to 10 VDC, auto
• Input impedance >100 kohms
• Resolution 12-bit
• Adjustable digital filter
• Accuracy ±0.1 % of reading, ±0.1 % of range (0.1 to 10 V, digital filter applied).
Содержание ControlBridge CB-ACC-232DCE-30
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