Operation Manual 37107F
MFR 3 - Multi Function Relay
© Woodward
Page 127/165
Pulse Outputs
NOTE
The pulse outputs of the energy counter are not calibrated!
These outputs issue pulses whose frequency is proportional to the measured real power or re-active
power. The frequency of the pulses can be adjusted. The length of a pulse is 50 ms to 100 ms. The
pulse frequency is adjustable so that the time between pulses does not fall under 100 ms at maximum
power.
Pulse Counter for Real Power
Parameter
231
Pulse output 1
----------------
Output of kWh pulses
+kWh / -kWh
+kWh
........... The output of pulses occurs for positive real power.
-kWh
............ The output of pulses occurs for negative real power.
Parameter
232
Pulse output 1
logic --------
Output of the kWh pulse
positive/negative
positive
........ The output of the kWh pulses (both positive/negative) occur with
positive logic (per kWh pulse the Open Collector output will be
opened).
negative
....... The output of the kWh pulses (both positive/negative) occur with
negative logic (per kWh pulse the Open Collector output will be
closed).
Parameter
233
Active energy
Pulse/kWh 000.0
Pulse per positive kWh
0.1 to 150.0
The number of pulses per measured unit to be output is configured here. (Ex.: If
20 kWh have been measured and "Pulse/kWh 020.00" has been configured, a total
of 20 kWh × 20 pulses/kWh = 400 pulses have been output. The evaluation of the
pulses must be performed externally.)
Pulse Counter Re-active Power
Parameter
234
Pulse output 2
----------------
Output of kvarh pulses
+kvarh / -kvarh
+kvarh
......... The output of pulses occurs for inductive re-active power.
-kvarh
.......... The output of pulses occurs for capacitive re-active power.
Parameter
235
Pulse output 2
logic --------
Output of the kvarh pulse
positive/negative
positive
........ The output of the kvarh pulses (both positive/negative) occur with
positive logic (per kvarh pulse the Open Collector output will be
opened).
negative
....... The output of the kvarh pulses (both positive/negative) occur with
negative logic (per kvarh pulse the Open Collector output will be
closed).
Parameter
236
Reactive energy
Pulse/kvah 000.0
Pulse per kvarh
0.1-150.0
The number of pulses per measured unit to be output is configured here. (Ex.: If
20 kvarh, inductive have been measured and "Pulse/kvah 020.00" has been confi-
gured, a total of 20 kvarh inductive × 20 pulses/kvarh = 400 pulses have been out-
put. The evaluation of the pulses must be performed externally.)
