Bender NGRM700 - Pulser (Menu 4); Display (Menu 5)

Menu
42
NGRM7xx_D00292_07_M_XXEN/02.2022
7.7 Pulser (menu 4)
A ground fault can be located by means of a measuring clamp-on ammeter and the
pulser function. The pulser relay is designed as Open Collector.
Pulser (menu 4.1)
 Active - The pulser is continuously active regardless of ground faults that have
occurred.
 External - If the digital input I1 is set to "Pulser", it can enable the pulser at any time.
 Auto - The pulser activates automatically in the event of a ground fault.
 Inactive - The pulser output is disabled.
The following diagram shows an overview of the pulser control:
Fig. 7.1: Configuration Digital 1 as pulser
t
pulse
(menu 4.2)
The pulse period can be set between 1…10 s.
7.8 Display (menu 5)
Choose whether the measured values for R
NGR
and I
NGR
should be displayed as absolute
(in  or A) or relative (in % to the reference value). The relative value is the ratio of the
measured value to the nominal value.
The set pulse period is only effective if the pulser (menu 4.1) is not
"inactive".
Pull up
10 kΩ
X1: GND
X1: +24 V
Parameter
Pulser
Parameter
Digital 1
Parameter
t
(impuls)
1...10 s
Auto
Auto
Extern
Ground fault
detected
Dig. Output
X1: Q2
Active (ON)
Inactive (OFF)
Dig. Input
X1: I1
External
Enable
Pulser
NGR
Method
NGR measurement
Parameter
NGR
Method
Passive