6 | © Danfoss | Energy Meters | 2017.03
VUIGN102
Installation & User Guide
Infocal 9
SONO 1500 CT in
supply pipe
Infocal 9 terminal
Vcc (brown)*
9 (+U)
Pulse (white)
10 (q1+)
GND (blue)
11 (q1-)
*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
Sensor cable
length [m]
Maximum per-
missible pulse
frequency [Hz]
Minimal permissible
pulse and pause
duration [ms]
Mains supply or active pulses
≤ 100
200
2.5
Battery supply and passive pulses
≤ 10
200
2.5
≤ 50
10
50
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
