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Installation & User Guide
SONO 1500 CT in
supply pipe
Vcc (brown)*
Pulse (white)
GND (blue)
*connect only if SONO 1500 CT with external supply.
Maximum permissible pulse input frequency and minimal permissible pulse and pause duration, depending
on pulse type and cable length:
Power supply type for calculator,
flow pulse input type
Mains supply or active pulses
Battery supply and passive pulses
2.
Electrical wiring
Electrical wiring diagram with 2-wire temperature sensors
q1 - pulse input signal from flow meter in supply pipe
q2 - pulse input signal from flow meter in return pipe
q3, q4 - pulse inputs from water meters
T1 - temperature sensor in supply pipe
T2 - temperature sensor in return pipe
Note: Only required for selected calculator type should be connected
6 | © Danfoss | Energy Meters | 2017.03
Infocal 9
Infocal 9 terminal
9 (+U)
10 (q1+)
11 (q1-)
Sensor cable
length [m]
≤ 100
≤ 10
≤ 50
Maximum per-
Minimal permissible
missible pulse
frequency [Hz]
200
200
10
pulse and pause
duration [ms]
2.5
2.5
50
VUIGN102
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