100
UMG 509
Determine the pulse value
Set the pulse length
Set the pulse length in accordance with the requirements
of the connected pulse receiver.
At a pulse length of 30 ms, for example, the UMG 509
generates a maximum number of 60,000 pulses
(see Table "maximum number of pulses" per hour.
Determining the maximum connected load
Example:
Current transformer = 150/5A
Voltage L-N = max. 300 V
Power per phase = 150 A x 300 V
= 45 kW
Power at 3 phases = 45kW x 3
Max. connected load = 135kW
Calculating the pulse value
Fig.: Connection example for the circuit as pulse
output.
+ -
230V AC
24V DC
External
supply voltage
1.5k
Data logger
UMG 509
Switch and pulse outputs
+24V=
13
14
15
Pulse value = 135kW / 60,000 Imp/h
Pulse value = 0.00225 pulse/kWh
Pulse value = 2.25 pulses/Wh
C
When using the digital outputs as pulse
outputs, the auxilliary voltage (DC) must
have a max. residual ripple of 5%.
Pulse value =
max. connected load
max. number of pulses/h
[Pulse/Wh]
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