Default-Setting Of Parameters; Circuit Diagram; Connection Terminals - DOLD RN 5897/020 Mode D'emploi

Function
Behaviour with internal device faults
If internal device faults were detected during the test function, the display
backlight changes into red and an error messages (failure code: „Int.1")
is indicated. The indicator relays K1 and K2 switch to the alarm state.
Behavior on faulty connection
When detecting broken wire on terminals L(+)/L(-), the measurement is
disabled. The reaction time could be up to 2 min. The monitoring relays
K1 and K2 go in alarm state, the backlight changes to red. The display
shows the fault message „L+/L-". After removing the interruption the fault is
automatically reset (max. reaction time up to 2 min) and the measurement
of the insulation resistance is continued.
Stored alarm values remain stored. An interruption of the protective
earth connections PE1/PE2 causes the same reaction as interrupting the
measuring circuit, only the display shows „PE1-PE2".
External control input
To terminals X1/X2 an external combined Test-/Reset button can be
connected. If the terminals X1/X2 are bridged for approx. > 1,5 s and <
10 s the test mode is started. This has the same function as pressing the
internal test button. When bridging X1/X2 for < 1,5 s, a stored alarm will
be reset. This has the same function as pressing the internal reset button.
If X1/X2 is activated for > 10 s, the measuring function is stopped.
The measuring function remains suspended for the duration of the control
of X1/X2.
Connection of an external coupling device
An external coupling device RL 5898 oder RP 5898 can be connected to
extend the input voltage range of the monitored voltage system on RN
5897/020. The terminals with the same legend of the insulation monitor
and the coupling device (VSG1, VSG2, L(+), L(-)) are connected together.
The network to be monitored is connected to terminals L1(+) und L2(-) on
the coupling device. Using the display menu in programming mode the
connection of the coupling device has to be selected and activated. The
broken wire detection is active on the terminals L1(+)/L2(-) on the coupling
device. A broken wire between coupling device and insulation monitor
cannot be detected immediately but the measured values on interruption
of 1 or 2 wires between coupling device and insulation monitor are much
lower as the real values, which will cause an early response of the device.
Programming/setting of parameters/set-up of the insulation monitor
The response values for alarm and pre-alarm can be adjusted via 2 rotary
switches „R " and „R " on the front of the device. New setting are immediately
A pA
active and do not require a restart of the unit. More settings can be done
with the 3 buttons and the display menu in programming mode. To start the
programming mode, the button „Set/ESC" has to be pressed for approx.
2 s. To avoid unauthorized manipulation, this button as well as the rotary
switches „R " and „R " are located behind a sealable transparent cover. When
A pA
the device changes to programming mode, the measurement is stopped,
the display back light changes to orange color and the first parameter is
displayed. To scroll the different parameters, the button „Set/ESC" has to
be pressed short. With the 2 scroll buttons (Scroll-Up „
„  ") the settings can be modified.
The first parameter is the broken wire detection in the measuring circuit
„BrWiD". Possible setting are continuously on („on"), continuously off („oFF")
or only active during self-test. The default is „on".
The second parameter is alarm memory „Mem.". Here are 2 options available
manual reset („on") und auto reset („oFF"). The default value is „oFF".
The third parameter is the relay operation principle „Rel." Settings are:
de-energized on trip („n.c.") and energized on trip („n.o."). The default
value is „n.c.".
Function
The fourth parameter is the type of network connection „Net". Selection
are AC Network(„Ac"),DC-Network („dc") or 3NAC-Network („3nAc"). The
default value is „Ac".
The device allow the connection of a coupling device, the fifth parameter
activates („on") or de-activates („oFF") the coupling device.
The leave the programming mode the button „Set/ESC" has to be pressed
for 2 s. The settings will be activated and stored permanently. After that the
device makes a restart similar to power on.

Default-Setting of Parameters

Nr. Parameter
Broken wire detect in measuring circuit
1
"Broken Wire Detect"
Storing insulation fault message
2
"Memory"
Switching mode of output relays
3
"Relay"
Power supply type
4
"Net"
Ext. coupling device
5
"VSG"

Circuit Diagram

Connection Terminals

Terminal designation
A1(+), A2
L(+), L(-), VSG1, VSG2
PE1, PE2
 " and Scroll-Down
X1, X2
11, 12, 14
21, 22, 24
23
VSG1 L(+) L(-) A1(+)
VSG2 A2
L(+) L(-) 11 21
U H
PE1 PE2
12 14 22
X1 X2
11 12 14 21 22 24 PE1 PE2
Signal description
Auxiliary voltage AC or DC
Connection for measuring ciruit or
Connection for coupling device
Connection for protective conductor
Control input
(combined external Test- and Reset-input
with additional Stop of the measuring
function)
Alarm signal relay K1(1 changeover contact)
Prewarning signal relay K2 (1 changeover
contact)
Default-Set
on
off
n.c. (normally closed)
de-energized on trip
AC
off
24
M11956_a
RN 5897/020 / 13.07.22 en / 605A