DOLD VARIMETER IMD RN 5897/011 User manual

130.06.23 de / 752A
0280720
Your Advantages
• Preventive fire and system protection
• Detection of symmetric and asymmetric insulation faults
• Quick fault localisation through selective earth fault detection to L+
and L-
• Universal application in non-earthed AC, DC, AC/DC networks
up to AC max. 250 V or DC max. 300 V
• With connection facility of an external coupling device RL 5898
for voltages up to AC 400 V / DC 500 V or
RP 5898 for voltages up to AC 690 V / DC 1000 V
• Easy adjustment of response values and setting parameter via
rotational switch and menu display or via Modbus RTU-interface
• Suitable for large leakage capacitances up to 1000 µF
• Optimised reaction time for large leakage capacitances
• Monitoring also with voltage-free mains
• Measuring circuit L(+)/L(-) with broken wire detection (can be switched off)
• Protective conductor PE1/PE2 with broken wire detection
(can't be switched off)
• 2 changeover contacts each for insulation failures-Pre-alarm and -alarm
each galvanically isolated
• With galvanic separated Modbus RTU interface
Features
• Insulation monitoring according to IEC/EN 61557-8
• Trigger output for insulation fault locating system
• 2 separate adjustable response thresholds
(using e.g. for pre-Alarm and Alarm)
• Setting range of 1st response value (Pre-Alarm): 1 kΩ… 2 MΩ
• Setting range of 2nd response value (Alarm): 1 kΩ… 2 MΩ
• Energized or de-energized on trip can be selected for indicator relay
• Display for indication of measured value, device parameters and
device status
• Setting the maximum leakage capacitance to shorten the response time
• Automatic and manual device self-test
• Alarm storage selectable
• Protection against manipulation by sealable transparent cover
• External control input for combined Test-/Reset-button
• 2 wide voltage input for auxiliary voltage
• Width 52.5 mm
Monitoring Technique
VARIMETER IMD
Insulation monitor
RN 5897/011
RN 5897/011 RP 5898
Coupling devices
RL 5898
AC/DC
Original
The insulation monitor RN 5897/011 of the VARIMETER IMD family
provides best and up to date insulation monitoring of modern IT systems
in an optimum and state of the art way fulfilling the relevant standards.
The device can be used in the most flexible way for AC, DC and AC/DC
systems even with large leakage capacity to earth (PE). The adjustment of
the setting values is simple and user friendly done on 2 rotary switches on
the front of the device. Via display and LEDs the measured value, device
parameters and device status are indicated easy to read. With a sealable
transparent cover the device is protectet against manipulation. The
RN 5987/011 has an additonal Modbus RTU-interface. All measured
values, device states and parameters can be read out, set and
parameterized. All functions available on the device can also be operated
via Modbus.
Product Description
Function Diagram
Manual reset
Alarm
Alarm Pre-Alarm Pre-Alarm
Hysteresis function
Reset
21-24
21-24
21-24
21-24
11-14
11-14
11-14
11-14
11-12
11-12
11-12
11-12
Earth fault
E
R
A
RpA
R
21-22
21-22
21-22
21-22
t
t
Open circuit operation
Open circuit operation
Open circuit operation
Open circuit operation
De-energized on trip
De-energized on trip
De-energized on trip
De-energized on trip
UH
M11593
Approvals and Markings
Applications
Insulation monitoring of:
• Non-earthed AC, DC, AC/DC networks
• UPS systems
• Networks with frequency inverters
• Battery networks
• Networks with direct current drives
• Hybrid and battery-powered vehicles
• Mobile generator sets
All Technical Data in this list relate to the state at the moment of edition. We reserve the right
for technical improvements and changes at any time.

230.06.23 de / 752A
The device is supplied with DC auxiliary voltage via terminals A1(+) / A2.
Switching on the auxiliary voltage (Power-On) is followed by an internal
self-test for 12 sec (see „Device test functions“). The test process is visible
in the display. After this, measurement of the insulation resistance in the
measuring circuits begins and the the colour of the backlight changes
into green.
Measuring circuit
(Insulation measurement between terminals L(+) / L(-) and PE1/PE2)
The insulation monitor RN 5897/011 can be operated either with or without
coupling device. Max. mains voltage and connection diagrams have to
be observed!
If the insulation monitor is operated without coupling device the terminals
L(+) and L(-) have to be connected directly to the voltage system to be
monitored. and the terminals VSG1/L(+) and VSG2/L(-) each have to be
bridged (see also operation with coupling device).
A broken wire detection that can be disabled provides a fault signal if both
terminals L(+) and L(-) are not linked by the connected network.
The type of network (AC, DC, 3NAC) has to be selected.
Also the terminals PE1 and PE2 have to be connected with 2 separate
wires to the protective earth. An interruption of a wire also causes a fault
signal (see section ”Behavior on faulty connection”). The monitoring of
the PE connection cannot be de-activated.
To measure the insulation resistance an active measuring voltage with
changing polarity is connected between L(+)/L(-) and PE1/PE2.The
momentary polarity of the measuring cycle is shown on the display by 2
curser segments („MP+“ for positive phase and „MP-“ for negative phase).
The duration of the positive and negative measuring phase depends on
the setting of the max. leakage capacity („CE[µF]“ in programming mode),
the actual leakage capacity of the monitored system and in DC systems
also on the level and duration of possible voltage variations. This allows
a correct and fast measurement in different network conditions.
At the end of a measuring cycle the actual insulation resistance is produced
and indicated. The actual value is shown on the display. The relays for alarm
K1 and pre-alarm K2 switch when dropping under the adjusted response
values. In addition the backlight of the display changes to orange color
on pre-alarm or to red color on alarm. An asymmetric earth fault either to
„+“ or „-“ is also indicated on the display (only in DC- systems, or with a
fault on the DC-side of a system).
Manual reset of fault message
Using the display menu in programming mode or programming via Modbus,
the manual reset function for insulation failures can be selected. If manual
reset is activated the insulation fault signals of the measuring circuit are
stored when dropping under the adjusted response values also if the
insulation resistance goes back to healthy state. The minimum value is
stored and can be shown on the display and via Modbus. Pressing the
„Reset“ button on the front side for 2 s, the alarm signal and the stored
minimum value are reset if the actual insulation resistance is in healthy state.
The device can also be reset with a Modbus command.
Indicator relay for insulation fault signal
For the indicator relays K1 (contacts 11-12-14, for alarm) and K2 (contacts
21-22-24, for pre-alarm) the function can be set in programming mode
via display menu or Modbus to energized on trip or de-energized on trip
when the insulation resistance drops below the adjusted response value.
The status of the indicator relays is shown on the display with the two cursor
segments "K1" and "K2". When the relay is energized, the corresponding
curser lights up. The status of the indicator relays is also shown via Modbus.
Using the insulation fault locating system
via trigger output
There is an additional trigger output for an insulation fault detection system
on the insulation monitor RN 5897/011.
This trigger output (Y1-Y2) can be coupled with the trigger input Y1-Y2
of RR 5886 to initiate automatic fault location with the insulation fault
locating system, consisting of RR 5886 and RR 5887. The trigger output is
activated when the measuring value drops under the alarm response value
(RE< RA). As long as it stays under the response value or an alarm is
stored, the trigger output Y1-Y2 remains active.
Via Modbus
The locating current injector RR 5886 has also a Modbus RTU interface.
This allows the master PLC to control the insulation fault location system
via the same bus system according to the specifications of the RR 5886,
if the fault location is to be started after evaluation of the corresponding
registers of the insulation monitor.
Broken wire detection
As described in section "Measuring circut", the measuring circuits L(+)/L(-)
and the protective conductors PE1/PE2 are constantly monitored for wire
breaks – not only at Power-On or a manual or occasional automatic test.
The response time of monitoring is only a few seconds. Broken wire
detection between L(+) and L(-) is performed via coupled alternating
voltage. This alternating voltage is short-circuited if the terminals are
connected to the connected mains at low-resistance. The device detects
that the mains to be monitored is properly connected.
Since this broken wire detection is carried out with alternating voltage, large
capacitances should be avoided between L(+) and L(-), since the capacitive
reactance of these capacitances also short-circuits this alternating voltage.
The device would no longer detect a connection fault on L(+)/L(-).
Especially parallel lines should be prevented over larger distances.
If larger capacitances between L(+)/L(-) cannot be avoided or if the coupled
alternating voltage interferes with the system, the broken wire detection
can be de-activated using the display menu in programming mode or
programming via Modbus. Monitoring deactivated, monitoring only during
device test or continuous monitoring (every 2 minutes for 10 s) are the
possible options. If the broken wire detection on L(+)/L(-) is de-activated
no AC voltage is injected.
The broken wire detection on PE1/PE2 cannot be de-activated.
Device test functions
Principally, 2 different test functions are implemented: The "self-test" and
the "expanded test":
The self-test of the device is performed automatically after Power-On and
every full operating hours. It can also be triggered manually at any time by
pressing the "Test" button at the device front for 2 s or via Modbus command.
With the self-test, contrary to the expanded test, the status of the Indicator
relays is not affected; the sequence is as follows:
The display backlight colour changes into orange.For approx.. 2 s all pixels
and segments of the LCD are shown. After that the text “Test1” comes up
and the measuring pulse is switched for approx. 5 s to negative test phase.
Additionally the test mode is shown via Modbus. The polarity of the test
voltage is also indicated on the display by curser segments. Within these 5
s the internal measuring circuit is checked for failures. Then the measuring
pulse is switched for approx. 5 s to positive test phase and more internal
tests take place. If no failures turned up and had been recognized, the
measurement continuous. The extended test
procedure is started when during or at the end of the above described 12 s
self-test the test button is pressed again for 2 s or via a Modbus command.
The sequence is similar to the self-test (2 measuring phases of 5 s each) but
in addition the output relays go in alarm stated. The display shows “Test2”
and via the Modbus the extended test is indicated, too. The test phases of
the extended test will be repeated continuously. The extended test can be
finished after the first complete sequence (approx. 10 s) by pressing the
"reset" button for 2 seconds. The device starts the insulation monitoring
again. The extended test can be finished via a Modbus command, too.
Test signal
1)
Reset signal
2)
Relay state K1 and K2
Measuring voltage
Positive
Alarm
No Alarm
Insulation
measurement
Insulation
measurement
Insulation
measurement
3)
4)
Self test (Test 1)
Duration: approx. 12s
Self test (Test 1)
Duration: approx. 12s
Duration: approx. 10s
Continuous extended
test (Test 2)
Negative
M12462
U
t
1) Test signal: Button Test > 2 s or X1/X2 < 3 s
2) Reset signal: Button Reset > 2 s or X1/X2 > 3 s
3) To initiate the extended test (Test 2) the test signal must be operated
within the self test (Test 1) again.
4) The reset signal has here no function, as the first complete sequence
of extended test (Test 2) is not finished.
Function Function

330.06.23 de / 752A
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.
The device faults are also indicated via Modbus.
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“.
Broken wire detection on terminals L(+)/L(-) and PE1/PE2 are also indicated
via Modbus.
External control input
To terminals X1/X2 an external combined Test-/Reset button can be con-
nected. If the terminals X1/X2 are bridged for approx. 1 s the test mode is
started. This has the same function as pressing the internal test button or
sending the coreresponding Modbus command. When bridging X1/X2 for
> 3 s, a stored alarm will be reset. This has the same function as pressing
the internal reset button.
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/ 011 . 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 or
programming via Modbus 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
(local directly on the the unit)
The response values for alarm and pre-alarm can be adjusted via 2
rotary switches „R
A
“ and „R
pA
“ on the front of the device. New setting are
immediately 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
A
“ and „R
pA
“ are located behind a sealable
transparent cover. When 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.The programming mode is also
indicated via Modbus. To scroll the different parameters, the button „Set/
ESC“ has to be pressed short. With the 2 scroll buttons (Scroll-Up „  “ and
Scroll-Down „  “) 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 avai-
lable 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.“.
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 fifth parameter ist the setting oft the maximum leakage capacity
(„CE[µF]“). This can be adjusted to 30 µF („30“), 100 µF („100“), 300 µF
(„300“) and 1000 µF („1000“). The default value is „30“.
The device allow the connection of a coupling device, the sixth parameter
activates („on“) or de-activates („oFF“) the coupling device. Standard
adjustment is de-activates („oFF“) .
The seventh parameter is the setting of the Modbus Baudrate ("kBaud").
Possible setting values are:
Baudrate
kBaud 1.2 2.4 4.8 9.6 19.2 38.4 57.6 115.2
Default setting is 1,2 kBaud
The eighth parameter is the Modbus adress, which can be set between
1 and 99. Default setting is adress 1. To exit the programming mode, the
"Set/ESC" button must be pressed for 2 s. The settings are applied and
saved permanently.After that, the device performs a restart (like Power-On).
Programming/setting of parameters/set-up of the insulation monitor
(via Modbus)
If the device should be parameterized via Modbus, the rotary switches
"RA" and "RpA" on the front of the device must be set to "Bus".
Then the parameters and setting values can be send via bus to the device.
These will be directly applied without a restart of the device.
The Modbus baudrate and adress can only be set locally via the display
menu.
Behaviour at parameter failures
If the rotary switches "RA" and "RpA are set to an undefinded postionen
(e. g. position 10 - which is not used), the device goes to parameter failure.
The backlight changes into red, the indicator relays switch to alarm state an
the error message "Param" is indicated. The device fault is also indicated
via Modbus. The rotary switches must be set to a defined position to reset
the failure. The device will also go to parameter failure if only one rotary
switch is set to "Bus".
Both rotary switches must always be set to "Bus".
If setting values and parameters are sent via Modbus to the device while
the rotary switches are not set to "Bus", the device will also go to parameter
failure. In this case the reset is only possible with a reset command via
Modbus.
Function Function

430.06.23 de / 752A
Terminal designation Signal description
A1(+), A2 Auxiliarx voltage AC or DC
L(+), L(-), VSG1, VSG2 Connection for measuring ciruit or
Connection for coupling device
PE1, PE2 Connection for protective conductor
X1, X2 Control input (combined external
Test- and Reset-input)
Y1, Y2 Alarm trigger output for insulation fault
locating system
11, 12, 14 Alarm signal relay K1(1 changeover contact)
21, 22, 24 Prewarning signal relay K2 (1 changeover
contact)
A Modbus signal A
B Modbus signal B
Nr. Parameter Default-Set
1
Broken wire detect in measuring circuit
“Broken Wire Detect” on
2
Storing insulation fault message
“Memory” off
3
Switching mode of output relays
“Relay”
n.c. (normally closed)
de-energized on trip
4
Power supply type
“Net” AC
5
Max. line capacitance
“CE[µF]” 30
6Ext.
coupling device
“VSG” off
7Modbus baud rate
"kBaud" 1.2
8Modbus adress
"Adr." 1
X1 X2
11 12 14 21 22 24 PE1 PE2
A2
A1(+) L(+)VSG1
AABB
VSG2
L(-)
22
12
L(+) L(-)
24
14
21
PE2
11
PE1
UH
Y1 Y2
M12376
Circuit Diagram
Connection Terminals
For communication between motor controller and a supervising control
the Modbus RTU protocol according to Specification V 1.1b3 is used.
Modbus RTU
IndicatorsDefault-Setting of Parameters
Modbus
M12378_b
Connection
measuring ciruit
or
coupling device Auxiliary
voltage
Trigger
output
Indicator relay
alarm and pre-alarm
Protective
conductor
External
control input

530.06.23 de / 752A
IndicatorsIndicators
The colour of the backlight indicates the operating status of the device.
Off: No auxiliary voltage connected
Green: Normal operation (Insulation resistance in healthy state)
Red: Alarm (measured value below alarm response value,
device failure, connection failure)
Orange: Warning (measured value below pre-alarm response value,
test mode, Parameter set-up mode)
Actual value display
The actual insulation resistance „RE[kΩ]“ is displayed. If the actual value is
RE < 10 kΩ, the value in kΩis displayed with 1 decimal place. With
values 10 kΩ≤RE < 500 kΩthe display shows the value without
decimal place, with values 500 kΩ≤RE < 1 MΩthe value is roun-
ded to 10 kΩ. Insulation resistance values 1 MΩ≤RE < 2 MΩ
are displayed in MΩwith one decimal place. If the resistance is
RE> 2 MΩthe display indicates ---- showing the value is higher the 2 MΩ.
In a DC Network an asymmetric insulation resistance to „+“ or „-“ is indi-
cated by displaying „RE+[kΩ]“ or „RE-[kΩ]“
By pressing the scroll buttons (Scroll-Up „“ und Scroll-Down „“) more
measured values can be shown. Another value is the mains voltage on
L(+)/L(-).This is indicated with „UN[VAC]“ or „UN[VDC]“ in V depending on
the type of network and voltage. If the unit is connected single pole to a
3NAC network the mains voltage cannot be measured. With this setting
the voltage value is not displayed. When manual reset is selected, the
display shows the minimum stored value of the resistance „RM[MΩ]“ or
„RM[kΩ]“ after the value dropped below the response value also when the
value goes back to healthy state. The stored minimum value will only be
reset when acknowledging the stored Alarm signal (with the reset button).
Also the firmware version can be displayed.
All measured values are provided via Modbus. The actual insulation
resistance, and the stored minimum insulation resistance are transmitted
with one decimal place. The measured values are transmitted rounded
exactly as they are displayed on the device.
For insulation restistances RE > 2 MΩthe value 0xFFFF is transmitted.
Positive measurement
phase active (MP+)
Negative measurement
phase active (MP-)
Pre-Alarm monitoring
relay K2 energized
Alarm monitoring relay
K1 energized
Display-Indication Measuring- resp. display value
Insulating resistance in kΩresp. MΩ
(„----“ complies RE ≥2 MΩ)
Asymmetrical insulating resistance in kΩ
against L+ or L- at DC-mains
Measured mains voltage in V
at AC- or DC-mains
(„----“ indicates invalid voltage value or
voltage < 5 V)
Stored min. insulating resistance
in kΩresp. MΩ
Currently set Alarm value "RA"
Currently set Pre-warning value "RpA"
Latest firmware-version
Display-Indication Test function
Display-Test
Selftesting
(measuring switching, measuring voltage,
internal tests)
Advanced Test
(additional control of indicator relay)

630.06.23 de / 752A
Display-Indication Failure cause Failure recovery
Broken wire detection
on L(+)/L(-).
Check
measuring circuit
L(+) and L (-)
Broken wire detection
on PE1/PE2.
Check
protective conductor
connections
PE1 and PE2
Rotary switch
"RA"/"RpA" in an
undefined position.
Only one of the
two rotary switches
"RA"/"RpA"
is set to "Bus".
Parameters sent via
Modbus although
the rotary switch
"RA"/"RpA"
is not set to "Bus".
Move rotary switch
"RA"/"RpA" to a defined
postition.
Set both rotary switches
to "Bus".
Send reset command
via Modbus.
Modbus timeout
detected
Lock Modbus timeout,
extend timeout time,
adjust communication with
the master
Internal failure
detected in
test mode
Press test button again
or restart the unit by
interrupting the auxiliary
supply temporarily.
If the fault remains
permanent, send device
back to manufacturer for
examination.
Faulty calibration
values detected in
device memory.
Send device back
to manufacturer for
recalobration and
examination.
Internal
communication error
occured
Restart the unit by
interrupting the auxiliary
supply temporarily.
If the fault remains
permanent, send device
back to manufacturer for
examination.
Internal
software error
occured
Restart the unit by
interrupting the auxiliary
supply temporarily.
If the fault remains
permanent, send device
back to manufacturer for
examination.
NotesError Indication
WARNING
Risk of electrocution!
Danger to life or risk of serious injuries.
• Disconnect the system and device from the power supply and ensure
they remain disconnected during electrical installation.
• The display of the voltage is not in real time. The Value on the display is
updated at the end of a measuring cycle. Determine voltage free status
by using appropriate instruments.
• The terminals of the control input X1-X2 have no galvanic separation to
the measuring circuit L(+) and L(-) and are electrically connected together,
therefore they have to be controlled by volt free contacts or bridge. These
contacts ore bridges must provide a sufficient separation depending on
the mains voltage on L(+)-L(-).
• Please do not connect external voltage to terminals X1/X2. The control
must only be made by bridging X1 and X2.
• The coupling unit
RL 5898 or RP 5898 must only be used in conjunction
with the RP5897/011 on a voltage system and not just by itself.
!
Attention!
• Before checking insulation and voltage, disconnect the monitoring device
RN 5897 from the power source!
• In one voltage system only one insulation monitor can be used.This has
to be observed when interconnecting two separate systems..
• Device terminals PE1 and PE2 must always be connected via separate
lines to different terminal points of the protective-conductor system.
• The device must not be operated without PE1/PE2 connection!
• If telegrams fail in the bus communication due to EMC interference,
grounding the bus cable screening on both sides could be a remedy.
With this earthing, attention must be paid to possibly occuring equalizing
currents, which could occur with larger potential differences between
the bus participants.
nfo
Attention!
• The main measuring circuit can be connected with its terminals L(+) and
L(-) both to the DC and also AC side of a mixed network; it is done most
practically where the primary incoming power supply takes place e.g.
with battery networks with connected inverters on the DC side, with
Generators/Transformers with connected Rectifiers or inverters on the
AC-side. To monitor a 3NAC system the device can be connected single
pole, (L(+) and L(-) are bridged, to the neutral of the 3p4w system. The 3
phases have a low-ohmic (approx. 3 – 5 Ω) connection via the transformer
windings so also insulation failures of the not directly connected phases
are detected. Via the display menu in programming mode the correct
type of network needs to be selected (see „Connection Examples“).
• If a monitored AC system includes galvanically connected DC circuits
(e.g. via a rectifier), an insulation failure on the DC side can only be
detected correctly, when a current of min 10 mA can flow via the semi-
conductor connections.
• If a monitored DC system includes galvanically connected AC circuits
(e.g. via an inverter), an insulation failure on the AC side can only be
detected correctly, when a current of min 10 mA can flow via the semi-
conductor connections.
• The measuring circuit of the RN 5897/011 are designed for leakage
capacities up to 1000 µF. The measurement of the insulation resistance
will not be influenced but for the measuring phases longer time periods
are necessary as with smaller capacities. If the max. possible leakage
capacity is known, the device can be adjusted to the required lower
level, which will reduce the response time and measurement time.
• The trigger output Y1/Y2 at RN 5897/011 is galvanic separated from the
rest of the circuit. It determined to be connected to a DOLD insulation
fault location system RR 5886 and RR 5887. Please do not connect
external voltages.
• For the register of the Insulating resistance the value 0xFFFF is transmitted
via Modbus if RE> 2 MΩ. If no valid mains voltage value was measured
or the mains voltage is < 5 V, the value 0xFFFF is transmitted for the
register of the measured mains voltage via Modbus.(See Parameter table).

730.06.23 de / 752A
Press button
„Set/ESC“ >2s
Set parameters
Parameter 1:
Broken wire detect in
measuring circuit
„BrWiD“
(Broken Wire Detect)
Standard: „on“
Parameter 2:
Storing insulation fault
„Mem.“
(Memory)
Standard: „oFF“
Parameter 3:
Switching mode of
„Rel.“
(Relay)
Standard: „n.c.“
Parameter 4:
Power supply type
„Net“
Standard: „Ac“
Parameter 5:
Max. line capacitance
„C E[µF]“
Standard: „30“
Parameter 6:
Ext. coupling device
„VSG“
Standard: „oFF“
Parameter 1:
Broken wire detect in
measuring circuit
„BrWiD“
(Broken Wire Detect)
„oFF“
Parameter 1:
Broken wire detect in
measuring circuit
„BrWiD“
(Broken Wire Detect)
„tESt“
Parameter 2:
Storing insulation fault
„Mem.“
(Memory)
„on“
Parameter 3:
Switching mode of
„Rel.“
(Relay)
„n.o.“
Parameter 4:
Power supply type
„Net“
„dc“
Parameter 4:
Power supply type
„Net“
„3nAc“
Parameter 5:
Max. line capacitance
„C E[µF]“
„100“
Parameter 5:
Max. line capacitance
„C E[µF]“
„300“
Parameter 5:
Max. line capacitance
„C E[µF]“
„1000“
Parameter 6:
Ext. coupling device
„VSG“
„on“
Press button
„Set/ESC“ >2s
End of programming
Parameter 7:
Modbus baud rate
„kBaud“
Standard: „1.2“
Parameter 7:
Modbus baud rate
„kBaud“
„115.2“
Parameter 8:
Modbus adress
„Adr.“
Standard: „1“
Parameter 8:
Modbus adress
„Adr.“
„99“
Press button
Scroll Up „▲“
Press button
Scroll Down „ ▼“
Press button
„Set/ESC“
output relays output relays
Running chart

830.06.23 de / 752A
Auxiliary voltage input A1(+)/A2
Nom. Voltage Voltage range Frequency range
AC/DC 24 ... 60 V AC 19 ... 68 V 45 … 400 Hz; DC 48 % W*)
DC 16 ... 96 V W*)≤5 %
AC/DC 100 ... 230 V AC 68 ... 276 V 45 … 400 Hz; DC 48 % W*)
DC 67 ... 300 V W*)≤5 %
*)W = Permitted residual ripple of auxiliary supply
Nominal consumption:
DC 24 V, 48 V: Max. 3 W
AC 230 V: Max. 3.5 VA
Control input X1/X2 for combinied external Test-/Reset-Taste
Current flow: Approx. 3 mA
No-load operation voltage
X1 to X2: Approx. 12 V
Permissible wire length: < 50 m
Activation time for test signal: Approx. 1 s
Activation time for reset signal: > 3 s
Outputs
Indicator contact: 2 x 1 changeover contact for Alarm (K1)
and Pre-Alarm (K2)
energized or de-energized on trip
(programmable)
Thermal current Ith:4 A
Switching capacity
to AC 15:
NO contact: 5 A / AC 230 V IEC/EN 60947-5-1
NC contact: 2 A / AC 230 V IEC/EN 60947-5-1
To DC 13: 2 A / DC 24 V IEC/EN 60947-5-1
Electrical life
at 5 A, AC 230 V: 1 x 105switching cycles
Short circuit strength
max. fuse rating: 4 A gG / gL IEC/EN 60947-5-1
Mechanical life: 50 x 106switching cycles
General Data
Operating mode: Continuous operation
Temperature range
Operation: - 30 ... + 60 °C
(at range 0 … - 30 °C limited
function of the LCD displaye)
Storage: - 30 ... + 70 °C
Altitude: ≤2000 m IEC 60664-1
Clearance and creepage
distances
Rated insulation voltage: 300 V
Overvoltage category: III
Rated impuls voltage /
pollution degree: IEC 60664-1
Measuring circuit L(+)/L(-) to
auxiliary voltage A1(+)/A2 and
indicator relay contacts K1, K2 and
trigger output Y1/Y2: 4 kV / 2
Auxiliary voltage A1(+)/A2 to
indicator relay contacts K1, K2 and
trigger output Y1/Y2: 4 kV / 2
Indicator relay contact K1 to
indicator relay contacts K2: 4 kV / 2
Trigger output Y1/Y2 to
indicator relay contacts K1, K2: 4 kV / 2
Bus A, B to
measuring circuit L(+)/L(-) and
auxiliary voltage A1(+)/A2 and
indicator relay contacts K1, K2: 6 kV / 2
Insulation test voltage
Routine test: AC 2.5 kV; 1 s
AC 4 kV; 1 s
Measuring ciruit L(+)/L(-) to PE1/PE2 (without coupling device)
Nominal voltage UN: AC / DC 0 ... 230 V
Max. voltage range UN: AC 0 ... 250 V
DC 0 ... 300 V
Frequency range: DC or 16 ... 1000 Hz
Max. line capacitance: 1000 µF
Internal resistance (AC / DC): > 90 kΩ
Measuring voltage: Approx. ±90 V
Max. mesured current (RE= 0): < 1.10 mA
Response inaccuracy: ±15 % ±1.5 kΩ IEC 61557-8
Response value hysteresis: Approx. + 25 %; min. + 1 kΩ
On delay
at CE= 1µF,
REof ∞to 0.5 * response value: < 30 s
Measuring time:
at CE= 1 … 1000 µF,
REfrom ∞to 1000 kΩ,
REfrom ∞to 100 kΩ,
REfrom ∞to 1 kΩ: See characteristics
Response values
Adjustable directly on the device
Pre-warning („RpA“):
kΩ: 20 30 50 100 250 500 1000 2000
Alarm („RA“)
kΩ: 1 2 10 20 50 100 150 250
Each adjustable via rotational switches
Adjustable via Modbus
Pre-warning "RpA": In the range of 1 ... 2000 kΩin 1 kΩsteps
Alarm "RA": In the range of 1 ... 2000 kΩin 1 kΩsteps
Response value broken
wire detection L(+)/L(-): > Approx. 90 kΩ
Response value broken
wire detection PE1/PE2: > Approx. 0.5 kΩ
Meas. ciruit L1(+)/L2(-) to PE1/PE2 (with coupling device RL / RP 5898)
RL 5898 RP 5898
Nominal voltage UN:AC 0 ... 400 V AC 0 ... 690 V
DC 0 ... 500 V DC 0 ... 1000 V
Max. max. voltage range UN:AC 0 ... 440 V AC 0 ... 760 V
DC 0 ... 550 V DC 0 ... 1100 V
Frequency range: DC or 16 ... 1000 Hz
Max. line capacitance: 1000 µF
Internal resistance (AC / DC): > 240 kΩ
Meas voltage: Approx. ±90 V
Max. mesured current (RE= 0): < 0.40 mA
Response inaccuracy: ±15 % ±1.5 kΩ IEC 61557-8
Response value hysteresis: Approx. + 25 %; min. + 1 kΩ
On delay
at CE= 1µF,
REof ∞to 0.5 * response value: < 30 s
Measuring time:
at CE= 1 … 1000 µF,
REfrom ∞to 1000 kΩ,
REfrom ∞to 100 kΩ,
REfrom ∞to 1 kΩ: See characteristics
Response values
Adjustable directly on the device
Pre-warning („RpA“):
kΩ: 20 30 50 100 250 500 1000 2000
Alarm („RA“)
kΩ: 1 2 10 20 50 100 150 250
Each adjustable via rotational switches
Adjustable via Modbus
Pre-warning "RpA": In the range of 1 ... 2000 kΩin 1 kΩsteps
Alarm "RA": In the range of 1 ... 2000 kΩin 1 kΩsteps
Response value broken
wire detection L1(+)/L2(-): > Approx. 500 kΩ
Response value broken
wire detection PE1/PE2: > Approx. 0.5 kΩ
Max. wire length
between insulation monitor
and coupling device: < 0.5 m
Technical Data Technical Data

930.06.23 de / 752A
RN 5897.12/011 AC/DC 24 … 60 V
Article number: 0069283
• Auxiliary voltage: AC/DC 24 … 60 V
RN 5897.12/011 AC/DC 100 … 230 V
Article number: 0069284
• Auxiliary voltage: AC/DC 100 … 230 V
• Outputs: 1 changeover contact for pre-warning
1 changeover contact for alarm
• Setting range Pre-Alarm: 20 kΩ… 2 MΩ(via rotary switch)
• Setting range Pre-Alarm: 1 kΩ… 2 MΩ(via Modbus)
• Setting range Alarm: 1 kΩ… 250 kΩ(via rotary switch)
• Setting range Alarm: 1 kΩ… 2000 kΩ(via Modbus)
• With Modbus RTU interface
• Trigger output for insulation fault locating system
• With connection facility of a coupling device RL 5898 or RP 5898
• Adjustable line capacitance
• Energized or de-energized on trip
• Selection of type of network
• Width: 52.5 mm
EMC IEC/EN 61326-2-4
Electrostatic discharge (ESD): 8 kV (air) IEC/EN 61000-4-2
HF irradiation:
80 MHz … 1 GHz: 20 V / m IEC/EN 61000-4-3
1 GHz … 2.7 GHz: 10 V / m IEC/EN 61000-4-3
Fast transients: 2 kV IEC/EN 61000-4-4
Surge voltage
between
wires for power supply: 1 kV IEC/EN 61000-4-5
Between wire and ground: 2 kV IEC/EN 61000-4-5
HF-wire guided: 20 V IEC/EN 61000-4-6
Interference suppression: Limit value classe B EN 55011
Degree of protection
Housing: IP 30 IEC/EN 60529
Terminals: IP 20 IEC/EN 60529
Housing: Thermpolastic with V0 behaviour
according to UL subject 94
Vibration resistance: Amplitude 0.35 mm,
Frequency 10 ... 55 Hz, IEC/EN 60068-2-6
Amplitude ±1mm,
Frequency 2 ... 13.2 Hz, 13.2 ... 100 Hz,
acceleration ±0.7 gn IEC/EN 60068-2-6
Shock resistance: 10 gn / 11 ms, 3 pulses IEC/EN 60068-2-27
Climate resistance: 30 / 060 / 04 IEC/EN 60068-1
Terminal designation: EN 50005
Wire connection DIN 46228-1/-2/-3/-4
Cross section: 0.5 ... 4 mm² (AWG 20 - 10) solid or
0.5 ... 4 mm² (AWG 20 - 10)
stranded wire without ferrules
0.5 ... 2.5 mm² (AWG 20 - 10)
stranded wire with ferrules
Stripping length: 6.5 mm
Wire fixing: Cross-head screw / M3 box terminals
Wire connection
Bus
pluggable
cage-clamp terminal (PC): 0.14 ... 0.5 mm2solid or
0.14 ... 0.25 mm2stranded ferruled
Insulation of wires or
sleeve length: 7 mm
Fixing torque: 0.5 Nm
Mounting: DIN rail IEC/EN 60715
Mounting position: Vertical
(air flow trough ventilation slots
must be ensured)
Weight: Approx. 205 g
Dimensions
Width x height x depth: 52.2 x 90 x 71 mm
Ordering Example for variants
RN 5897 .12 /011 /61 AC/DC 24 … 60 V 1 kΩ- 250 kΩ20 kΩ- 2 MΩ
Setting range Pre-warning
Setting range alarm
Auxiliary voltage
UL approval
Variant, if required
Contacts
Type
Vibration and
shock resistance: Category 1, Class B IEC/EN 61373
Service temperature classes: OT1 compliant
Protective coating of the PCB: No
Classification to DIN EN 50155
Standard Types
Technical Data

10 30.06.23 de / 752A
RL 5898/61
Article number: 0068315
• Coupling device for RN 5897.12/011
• Extension of nominal voltage range UN
to DC 500 V, AC 400 V
• Weight: Approx. 60 g
• Dimensions
- Width x height x depth: 35 x 90 x 71 mm
RP5898/61
Article number: 0066944
• Coupling device for RN 5897.12/011
• Extension of nominal voltage range UN
to DC 1000 V, AC 690 V
• Weight: Approx. 110 g
• Dimensions
- Width x height x depth: 70 x 90 x 71 mm
AccessoriesAccessories
Flush mounting kit
Order reference: KU 4087-150/0056598
For universal use with:
·R-series devices of
17.5 to 105 mm width
·Easy mounting
Insulation monitor
connection
Measuring ciruit
M12054_c
Insulation monitor
connection
Measuring ciruit
M11599_c

11 30.06.23 de / 752A
Connection Examples
*1) Auxiliary voltage UH(A1(+)/A2) ) can also be sourced from the monitored voltage system.
The voltage range of the auxiliary supply has to be taken into account.
*2) Control input X1/X2 for external combined Test-/Reset-button with Stop of the measuring function:
• Control approx 1 s: Test function
• Control > 3 s: Reset function
Characteristics
M11605
L1
L2
L3
N
L(+)VSG1 Y1
RN5897/011
X1
L(-) VSG2 Y2
X2 11PE1 12PE2 14 21 22 24
M12381_a
*2)
A1(+) A2
UH
*1)
UN
PE
B
A
Ungrounded mains
3/N AC 400V/230V 16...1000Hz
External combined
Test/Reset button
Setting of type of network
3N AC
:
External coupling device:
OFF
VSG1
VSG1
L(+)
L(+)
L(-)
L(-)
PE
RN5897/011
X1
VSG2
VSG2
X2 11PE1 12PE2 14 21 22 24
M12384
*2)
A1(+)Y1 Y2 A2
UH
*1)
L1
L2
L3 UN
L1(+) L2(-)
RL5898
RP5898
B
A
External combined
Test/Reset button
Setting of type of network:
AC
External coupling device:
ON
Ungrounded mains
RL5898: 3 AC 0...440V 16...1000Hz
RP5898: 3 AC 0...760V 16...1000Hz

12 30.06.23 de / 752A
*1) Auxiliary voltage UH(A1(+)/A2) ) can also be sourced from the monitored voltage system.
The voltage range of the auxiliary supply has to be taken into account.
*2) Control input X1/X2 for external combined Test-/Reset-button with Stop of the measuring function:
• Control approx 1 s: Test function
• Control > 3 s: Reset function
Connection Examples
L1
L2
L(+)VSG1
RN5897/011
X1
L(-) VSG2
X2 11PE1 12PE2 14 21 22 24
M12387
*2)
A1(+)Y1 Y2 A2
UH
*1)
UN
B
A
Single phase mains, isolated from earth
AC 0...250V 16...1000Hz
External combined
Test/Reset button
Setting of type of network
AC
coupling device:
OFF
:
External
L1
L2
VSG1
VSG1
L1(+)
L(+)
L(+)
L(-)
L(-)
PE
RN5897/011
X1
VSG2
VSG2
L2(-)
X2 11PE1 12PE2 14 21 22 24
M12390_a
*2)
A1(+)Y1 Y2 A2
UH
*1)
UN
RL5898
RP5898
B
A
External combined
Test/Reset button
Setting of type of network:
AC
External coupling device:
ON
Single phase mains, isolated from earth
RL5898: AC 0...440V 16...1000Hz
RP5898: AC 0...760V 16...1000Hz
L(+)VSG1
RN5897/011
X1
L(-) VSG2
X2 11PE1 12PE2 14 21 22 24
M12393
*2)
A1(+)Y1 Y2 A2
UH
*1)
PE
L+
L-
UN
B
A
External combined
Test/Reset button
Ungrounded DC network
DC 0...300V
Setting of type of network
DC
coupling device:
OFF
:
External
VSG1
VSG1
L(+)
L(+)
L(-)
L(-)
PE
RN5897/011
X1
VSG2
VSG2
X2 11PE1 12PE2 14 21 22 24
M12396
*2)
A1(+)Y1 Y2 A2
UH
*1)
L+
L-
UN
L1(+) L2(-)
RL5898
RP5898
B
A
External combined
Test/Reset button
Setting of type of network:
DC
External coupling device:
ON
Ungrounded DC network
RL5898: DC 0...550V
RP5898: DC 0...1100V

13 30.06.23 de / 752A
Bus Interface
Protocol Modbus Seriell RTU
Adress 1 to 99
Baud rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 Baud
Data bit 8
Stop bit 2
Parity None
More information about the interface, wiring rules, device identification
and communication monitoring can be found in the Modbus user manual.
Function-Codes
At RN 5897/011 the following function codes are implemented:
Function-
Code
Name
0x01 Read Coils
0x03 Read Holding Register
0x04 Read Input Register
0x05 Write Single Coil
0x06 Write Single Register
0x10 Write Multiple Register
Device configuration data (parameters and setting values from register
42001, as well as the "factory setting" command) are directly stored in the
EEPROM in non-volatile memory when writing via Modbus. As the write
cycles of an EEPROM are limited, the write operation with these registers
or this command must not be cyclic.
Device configuration

14 30.06.23 de / 752A
Parameter table
Coils
Register-
Adress
Protocol-
Adress Name Value range
Initial
value Description Data type Access rights
1 0 Reset 0x0000
0xFF00
0x0000 No Function
Error acknowledgement device error
BIT write / read
2 1 Device reset 0x0000
0xFF00
0x0000 No Function
Device restart
BIT write / read
3 2 Reserved 0x0000
0xFF00
0x0000 - BIT -
4 3 Factory setting 0x0000
0xFF00
0x0000 No Function
Factory setting of the parameters
BIT write / read
5 4 Device selftesting 0x0000
0xFF00
0x0000 No Function
Selftesting
BIT write / read
6 5 Fault memory
indicator relay K1 + K2
0x0000
0xFF00
0x0000 No Function
Fault memory acknowledgement
indicator relay K1 and K2
BIT write / read
7 6 Reserved 0x0000
0xFF00
0x0000 - BIT -
87Advanced Test 0x0000
0xFF00
0x0000 No Function
Advanced Test
BIT write / read

15 30.06.23 de / 752A
Parameter Table
Input Registers
Register-
Adress
Protocol-
Adress Name Value range Description Data type Access rights
30001 0 Device failure 0 … 12 0: No failure
1: Broken wire detection L(+)/L(-)
2: Broken wire detection PE1/PE2
3: Internal failure detected in test mode (Int. 1)
4: Parameter failures (Incorrect setting of
potentiometers on the device)
9: Communication fault Modbus
10: Checksum failure EEPROM (Int. 2)
11: Internal communication fault (Int. 3)
12: Internal error 4 (Int. 4)
UINT16 read
30002 1 State of device 0 … 4 0: Device initialize
1: Device is ready and in measuring mode
2: Device in error mode
3: Device in selftesting
4: Device in advanced test
UINT16 read
30003 2 Device flags 0 … 3 Bit 0: Indicator relay K1 energized
Bit 1: Indicator relay K2 energized
UINT16 read
Register-
Adress
Protocol-
Adress Name Value range Description Data type Access rights
32001 2000 Insulating resistance 0 … 20000,
65535
in 1/10 kΩUINT16 read
32002 2001 Asymmetrical
insulating resistance
1,2,4 Bit 0: Resistance is asymmetrical
Bit 1: Asymmetrical against L+
Bit 2: Asymmetrical against L-
UINT16 read
32003 2002 Measured
mains voltage
0 … 300
without
VSG
0 … 1000
with VSG
in V UINT16 read
32004 2003 Stored min.
insulating resistance
0 … 20000,
65535
in 1/10 kΩUINT16 read

16 30.06.23 de / 752A
Holding Registers
Register-
Adress
Protocol-
Adress Name Value range Initial value Description Data type Access rights
40001 0 Control word 1 0 … 65535 0 Bit 0 = Reset
Bit 1 = Device reset
Bit 2 = Reserved
Bit 3 = Factory settings
Bit 4 = Device selftesting
Bit 5 = Fault memory acknowledgement
indicator relay K1 and K2
Bit 6 = Reserved
Bit 7 = Advanced test
UINT16 write / read
40002 1 Timeout release 0 … 1 0 Bit 0 = Enable UINT16 write / Read
40003 2 Timeout 100 …10000
0 …10000
1000 Timeout Value in ms (write)
Timeout Value in ms (read)
UINT16 write / Read
Register-
Adress
Protocol-
Adress Name Value range Initial value Description Data type Access rights
42001 2000 Broken wire detect in
measuring circuit
1,2,4 1 Bit 0 = On
Bit 1 = Off
Bit 2 = Only during the device selftesting
UINT16 write /Read
42002 2001 Storing insulation
fault message
indicator relay K1 + K2
0 … 1 0 0 = Off
1 = On
UINT16 write /Read
42003 2002 Switching mode of
output relays
indicator relay K1 + K2
0 … 1 0 0 = De-energized on trip
1 = Energized on trip
UINT16 write /Read
42004 2003 Power supply type 1,2,4 1 Bit 0 = AC mains
Bit 1 = DC mains
Bit 2 = 3N AC mains
UINT16 write /Read
42005 2004 Line capacitance
CE
1,2,4,8 1 Bit 0 = 30µF
Bit 1 = 100µF
Bit 2 = 300µF
Bit 3 = 1000µF
UINT16 write /Read
42006 2005 Response value
indicator relay K1
1 … 2000 2000 Response value indicator relay K1 in kΩUINT16 write /Read
42007 2006 Response value
indicator relay K2
1 … 2000 2000 Response value indicator relay K2 in kΩUINT16 write /Read
42008 2007 Coupling device 1,2 1 Bit 0 = Off
Bit 1 = RL 5898 or RP 5898
UINT16 write /Read
Parameter Table
E. Dold & Söhne GmbH & Co. KG • D-78120 Furtwangen
dold-relays @dold.com • www.dold.com
• Bregstraße 18 • Phone [phone] • Fax [phone]