Bender ISOMETER isoUG425 User manual

Manual EN
ISOMETER® isoUG425
Insulation monitoring device for earth fault detection
in unearthed DC systems up to 120 V
Software version: D0 76 V2.xx
isoUG425_D00220_04_M_XXEN/10.2023


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ISOMETER® isoUG 25
Table of contents
1General information...........................................................................................5
1.1 How to use the manual.................................................................................................................................5
1.2 Indication of important instructions and information.......................................................................5
1.3 Signs and symbols...........................................................................................................................................5
1. Service and Support....................................................................................................................................... 5
1.5 Training courses and seminars...................................................................................................................6
1.6 Delivery conditions......................................................................................................................................... 6
1.7 Inspection, transport and storage.............................................................................................................6
1.8 Warranty and liability.....................................................................................................................................6
1.9 Disposal of Bender devices..........................................................................................................................7
1.10 Safety.................................................................................................................................................................... 7
2F nction...............................................................................................................8
2.1 Intended use......................................................................................................................................................8
2.2 Device features................................................................................................................................................. 8
2.3 Function description...................................................................................................................................... 8
2.3.1 Monitoring the insulation resistance....................................................................................................... 9
2.3.2 Undervoltage/overvoltage monitoring...................................................................................................9
2.3.3 Self test/error codes........................................................................................................................................9
2.3. Malfunction......................................................................................................................................................10
2.3.5 Alarm assignment of the alarm relays K1/K2..................................................................................... 11
2.3.6 Measuring and response times................................................................................................................11
2.3.7 Password protection (on, OFF)................................................................................................................ 12
2.3.8 Maximum permissible system leakage capacitance........................................................................12
2.3.9 External test/reset button (T/R)............................................................................................................... 12
2.3.10 Fault memory..................................................................................................................................................12
2.3.11 History memory HiS..................................................................................................................................... 13
2.3.12 Digital interface..............................................................................................................................................13
3Installation, connection and commissioning.................................................14
3.1 Dimensions...................................................................................................................................................... 1
3.2 Installation........................................................................................................................................................1
3.3 Connection.......................................................................................................................................................15
3. Commissioning...............................................................................................................................................16
4Operation.......................................................................................................... 18
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Table of contents
.1 Operating and display elements.............................................................................................................18
.2 Menu overview...............................................................................................................................................20
.3 Displaying measured values..................................................................................................................... 21
. Setting the response values (AL)............................................................................................................ 21
. .1 Setting the response values for monitoring the insulation resistance......................................21
. .2 Setting the response values for undervoltage and overvoltage.................................................22
. .3 Response values overview.........................................................................................................................22
.5 Configuring fault memory, alarm relays, and interfaces (out)......................................................22
.5.1 Configuring the relays.................................................................................................................................22
.5.2 Assigning the alarm messages to the relays...................................................................................... 22
.5.3 Activating or deactivating fault memory.............................................................................................23
.5. Configuring interface...................................................................................................................................2
.6 Setting delay times and self test cycles (t).......................................................................................... 2
.7 Setting device control parameters (SEt)...............................................................................................25
.8 Reset to factory settings.............................................................................................................................25
.9 Showing and deleting the history memory........................................................................................25
.10 Querying software version (InF).............................................................................................................. 25
5Data access via RS-485 interface.....................................................................26
5.1 Data access using the BMS protocol..................................................................................................... 26
5.2 Data access using the Modbus RTU protocol.................................................................................... 26
5.2.1 Reading out the Modbus register from the ISOMETER®.................................................................26
5.2.2 Writing the Modbus register (parameter setting).............................................................................27
5.2.3 Exception code...............................................................................................................................................28
5.3 Modbus register assignment.................................................................................................................... 29
5.3.1 Modbus measured value registers......................................................................................................... 29
5.3.2 Modbus parameter register...................................................................................................................... 32
5. IsoData data string....................................................................................................................................... 36
6Technical data...................................................................................................37
6.1 Technical data isoUG 25............................................................................................................................37
6.2 Connection....................................................................................................................................................... 0
6.3 Standards and certifications..................................................................................................................... 1
6. Ordering data.................................................................................................................................................. 1
6.5 Change log....................................................................................................................................................... 2
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ISOMETER® isoUG 25
1 General information
1.1 How to se the man al
ADVICE
This manual is intended for qualified personnel working in electrical engineering and electronics!
Part of the device documentation in addition to this manual is the enclosed supplement "Safety
instructions for Bender products".
ADVICE
Read the operating manual before mounting, connecting and commissioning the device. Keep the
manual within easy reach for future reference.
1.2 Indication of important instr ctions and information
DANGER
Indicates a high risk of danger that will result in death or serious injury if not avoided.
WARNING
Indicates a medium risk of danger that can lead to death or serious injury if not avoided.
CAUTION
Indicates a low-level risk that can result in minor or moderate injury or damage to property if not
avoided.
ADVICE
Indicates important facts that do not result in immediate injuries. They can lead to malfunctions if the
device is handled incorrectly.
Information can help to optimise the use of the product.
1.3 Signs and symbols
Disposal Protect from moisture Protect from dust
Temperature range Recycling RoHS directives
1.4 Service and S pport
Information and contact details about customer service, repair service or field service for Bender devices are
available on the following website: Fast assistance | Bender GmbH & Co. KG.
isoUG 25_D00220_0 _M_XXEN/10.2023 5

General information
1.5 Training co rses and seminars
Regular face-to-face or online seminars for customers and other interested parties:
www.bender.de > know-how > seminars.
1.6 Delivery conditions
The conditions of sale and delivery set out by Bender GmbH & Co. KG apply. These can be obtained in printed
or electronic format.
The following applies to software products:
Die Elektroindustrie
‘Software clause in respect of the licensing of standard software as part of deliveries,
modifications and changes to general delivery conditions for products and services in the
electrical industry’
1.7 Inspection, transport and storage
Check the shipping and device packaging for transport damage and scope of delivery. In the event of
complaints, the company must be notified immediately, see "www.bender.de > service & support.".
The following must be observed when storing the devices:
1.8 Warranty and liability
Warranty and liability claims for personal injury and property damage are excluded in the case of:
•Improper use of the device.
•Incorrect mounting, commissioning, operation and maintenance of the device.
•Failure to observe the instructions in this operating manual regarding transport, commissioning, operation
and maintenance of the device.
•Unauthorised changes to the device made by parties other than the manufacturer.
•Non-observance of technical data.
•Repairs carried out incorrectly.
•The use of accessories or spare parts that are not provided, approved or recommended by the
manufacturer.
•Catastrophes caused by external influences and force majeure.
•Mounting and installation with device combinations not approved or recommended by the manufacturer.
This operating manual and the enclosed safety instructions must be observed by all persons working with the
device. Furthermore, the rules and regulations that apply for accident prevention at the place of use must be
observed.
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ISOMETER® isoUG 25
1.9 Disposal of Bender devices
Abide by the national regulations and laws governing the disposal of this device.
For more information on the disposal of Bender devices, refer to
www.bender.de > service & support.
1.10 Safety
If the device is used outside the Federal Republic of Germany, the applicable local standards and regulations
must be complied with. In Europe, the European standard EN 50110 applies.
DANGER Risk of fatal injury due to electric shock!
Touching live parts of the system carries the risk of:
•Risk of electrocution due to electric shock
•Damage to the electrical installation
•Destruction of the device
Before installing the device and before working on its connections, make sure that the installation
has been de-energised. The rules for working on electrical systems must be observed.
isoUG 25_D00220_0 _M_XXEN/10.2023 7

Function
2 F nction
2.1 Intended se
The ISOMETER® isoUG 25 is an insulation monitoring device for earth fault detection. It monitors the
asymmetrical insulation resistance RF of unearthed DC systems (IT systems) with system voltages of
DC 12…120 V.
The maximum permissible system leakage capacitance is 50 μF.
In order to meet the requirements of the applicable standards, customised parameter settings must be made
on the equipment in order to adapt it to local equipment and operating conditions. Please heed the limits of
the range of application indicated in the technical data.
Any other use or a use that goes beyond this constitutes improper use.
The isoUG42 is not an insulation monitoring device as described in IEC 61 7-8 / EN 61 7-8. The offset
voltage measured in the event of an insulation fault on a system conductor is metrologically evaluated.
Using a passive measurement method, the isoUG42 records insulation faults that cause an asymmetry
to PE in the IT system. Symmetrical insulation faults (i.e. equally large insulation faults on the positive and
negative power conductors to earth) are not detected or recorded.
If the ISOMETER® is installed inside a control cabinet, the insulation fault message must be audible and/or
visible to attract attention.
2.2 Device feat res
•Monitoring of the asymmetrical insulation resistance RF for unearthed DC systems
•Measuring the system voltage Un (True-RMS and DC) with undervoltage/overvoltage detection
•Measuring the DC residual voltages UL+e (L+ to PE) and UL–e (L– to PE)
•Selectable start-up delay, response delay and delay on release
•Alarm output via LEDs (“AL1”, “AL2”), display, and alarm relays (“K1”, “K2”)
•Selectable n/c or n/o relay operation
•Measured value indication via multi-functional LC display
•Activatable fault memory
•Configurable adaptation to the system leakage capacitance Ce up to 50 μF
•Two separately adjustable response value ranges 1…100 kΩ (prewarning, alarm)
•RS- 85 (galvanically isolated) including the following protocols:
– BMS (Bender measuring device interface) for the data exchange with other Bender devices
– Modbus RTU
– IsoData (for continuous data output)
•Password protection against unauthorised changing of parameters
2.3 F nction description
The ISOMETER® measures, from a minimum system voltage, the asymmetrical insulation resistance RF between
the system to be monitored (L+, L−) and earth (PE). The RMS value and the DC value of the system voltage
Un between L+ and L− as well as the residual voltages UL+e (between L+ and earth) and UL−e (between L− and
earth) are also measured.
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ISOMETER® isoUG 25
It is possible to assign the detected fault or the faulty conductor to an alarm relay via the menu. If the values RF
or Un violate the response values activated in the “AL” menu, this will be indicated by the LEDs and relays “K1”
and “K2” according to the signalling assignment set in the “out” menu. In addition, the operation of the relay
can be set and the fault memory “M”, activated.
If the values RF or Un do not violate their release value (response value plus hysteresis) for the period toff
without interruption, the alarm relays will switch back to their initial position and the alarm LEDs “AL1”/“AL2”
go out. If the fault memory is activated, the alarm relays remain in alarm condition and the LEDs light until the
reset button “R” is pressed or the supply voltage is interrupted.
The device function can be tested using the test button “T”.
Parameters are assigned to the device via the LCD and the control buttons on the front panel; this function
can be password-protected. Parameterisation is also possible via the BMS bus, for example by using the BMS
Ethernet gateway (COM 60IP) or the Modbus RTU.
2.3.1 Monitoring the ins lation resistance
The insulation resistance RF is monitored by means of the parameters “R1” (prewarning) and “R2” (alarm) (see
chapter . .3). The value “R1” can only be set higher than the value “R2”. If the insulation resistance RF reaches
or falls below the activated values “R1” or “R2”, an alarm message is triggered. If RF exceeds the values “R1” or
“R2” plus the hysteresis value, the alarm will be cleared.
2.3.2 Undervoltage/overvoltage monitoring
To monitor the system voltage Un, the two parameters “U˂” and “U˃” can be enabled in the response-value
menu “AL” (see chapter . ). The maximum undervoltage value is limited by the overvoltage value.
The RMS value of the system voltage Un is monitored. If the system voltage Un reaches, falls below, or exceeds
the limit values “U˂” and “U˃”, an alarm will be signalled. If the maximum permissible system voltage Un set for
the ISOMETER® is exceeded, an alarm message will be triggered even if the overvoltage limit value has been
deactivated. The alarm will be deleted when the limit values plus hysteresis (see chapter . .1) are no longer
violated.
2.3.3 Self test/error codes
The self test checks the function of the ISOMETER®, and monitors the connection to earth as well as the
connection to the system to be monitored. The alarm relays do not switch during an automatically started self
test. For a self test started manually, the switching of the alarm relays can be set using the parameter “test” in
the alarm assignment (menu “out”, chapter .5.2). During the test, the display indicates “tES”.
When malfunctions are detected or connections are missing, the LEDs “ON”/“AL1”/“AL2” flash. The display
shows the respective error codes (“E.xx”), and in the factory setting relay “K2” switches. The relays can be
assigned to a device error with the parameter “Err” in the “out” menu in the alarm assignment.
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Function
2.3.3.1 Error codes
In the event of a device error the display shows the respective error code.
Overview of some error codes
Error code Meaning
E.01
PE connection error
The connection of “E” or “KE” to earth is interrupted.
Action: Check connection, eliminate error. The error code will be erased automaticall once the
error has been eliminated.
E.02
Wrong polarity
The monitored DC s stem has the wrong polarit .
Action: Check connection, eliminate error. The error code will be erased automaticall once the
error has been eliminated.
E.05
Measurement error
Due to s stem interferences or a device error, the insulation measured value is no longer updated.
Prewarning and alarm are set for the insulation measured value at the same time.
Calibration invalid after software update
“E.05” appears together with “E.08”: The software is not compatible to the calibration of the device.
Action: Install the previous software version or have the device calibrated at the factor .
E.08 Calibration error
Action: Check connection, eliminate error. If the error is still present, there is a device error.
Internal device errors “E.xx” can be caused by external disturbances or internal hardware errors. If the error
message occurs again after the device has been restarted or after a reset to the factory settings (menu item
“FAC”), the device must be repaired. After the fault has been eliminated, the alarm relays switch back either
automatically or when the reset button is pressed. The self test can take a few minutes.
2.3.3.2 A tomatic self test
In the factory setting a self test is carried out when the supply voltage Us is connected and after that every 2 h.
This cycle can be adjusted: off, 1 h, 2 h (see chapter .6).
The self test can be disabled for the device start so that the device can enter the measurement mode more
quickly. To this end, set the parameter “S.Ct = off” in the menu “SEt”.
2.3.3.3 Man al self test
The manual self test is started by pressing the external test/reset button or the test button “T” on the device for
˃ 1.5 s. Holding the test button “T” also shows all display elements.
2.3.4 Malf nction
The device checks some of its functions continuously during operation. If a fault is detected, the device
error (“Err”) is signalled, “E.xx” appears on the display as an identifier for error type xx, and the LEDs
“ON”/“AL1”/“AL2” flash.
Please contact Bender Service, if the error occurs again after the device has been restarted or the factory
settings have been restored.
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ISOMETER® isoUG 25
2.3.5 Alarm assignment of the alarm relays K1/K2
The notifications for “device error”, “insulation fault”, “undervoltage/overvoltage fault”, “device test” and
“device start with alarm” can be assigned to the alarm relays via the “out” menu.
An ins lation fa lt is indicated by these messages:
•“+R1” and “+R2”: insulation fault assigned to conductor L1/+
•“–R1” and “–R2”: insulation fault assigned to conductor L2/–
If an assignment to a conductor is not possible, e.g. due to a symmetrical insulation fault, the respective “+”
and “–” messages are set together.
The message “test” indicates a device test triggered manually via a test button or the communication inter-
face.
The message “S.AL” indicates a device start with alarm. When the parameter value is set to “S.AL = on” and
the supply voltage Us is connected, the ISOMETER® starts with the insulation measured value RF = 0 Ω and
and sets all activated alarms. The alarms will be cleared only when the measured values are up-to-date and no
thresholds are violated. In the factory setting “S.AL = off”, the ISOMETER® starts without an alarm.
Recommendation: Set parameter value “S.AL” identical for both relays.
2.3.6 Meas ring and response times
The measuring time is the period essential for the detection of the measured value. The measuring time is
reflected in the operating time tae. For the insulation resistance measured value, it is mainly determined by the
necessary measuring pulse duration, which depends on the insulation resistance RF and the system leakage
capacitance Ce of the system to be monitored. The measuring pulse is generated by the measuring pulse
generator integrated in the ISOMETER®. The measuring times for Ce, UL1e, UL2e and R % are synchronous.
System disturbances may lead to extended measuring times. In contrast, the time for the system voltage
measurement Un is independent and considerably shorter.
Operating time tae
The operating time tae is the time required by the ISOMETER® to determine the measured value. The insulation
resistance measured value depends on the insulation resistance RF and the system leakage capacitance Ce.
Example: A maximum permissible system leakage capacitance of Ce = 1 μF and an insulation fault of
RF = 12 kΩ (Ran = 25 kΩ) in a 120 V DC system result in an operating time of tae < 1 s.
Increasing the maximum permissible system leakage capacitance Ce (parameter C in the “Set” menu) over 1 μF
may extend the guaranteed operating time of 1 s proportionally to the increase of the capacitance.
Response delay ton
The response delay ton is set uniformly for all alarm messages in the “t” menu using the parameter “ton”, while
each alarm message specified in the alarm assignment has its own timer for ton. This delay can be used for
interference suppression in the case of short measuring times.
An alarm message will only be signalled when a limit value of the respective measured value is violated for the
duration of ton. Each time the limit value is violated within the time ton, the response delay “ton” restarts.
Total response time tan
The total response time tan is the sum of the operating time tae and the response delay ton.
isoUG 25_D00220_0 _M_XXEN/10.2023 11

Function
Delay on release toff
The delay on release toff can be set uniformly for all alarm messages using the parameter “toff”, while each
alarm message specified in the alarm assignment has its own timer for toff.
An alarm message will be signalled until the limit value of the respective measured value is no longer violated
(including hysteresis) for the duration of toff without interruption. Each time a limit value is no longer violated
during toff, the delay on release “toff” restarts.
Start- p delay t
After connecting the supply voltage US, the alarm output is suppressed for the time set in parameter
“t” (0…10 s).
2.3.7 Password protection (on, OFF)
If password protection is activated (on), settings can only be made after entering the password (0...999). For its
activation, see chapter .7.
2.3.8 Maxim m permissible system leakage capacitance
A set capacitance value above 1 μF extends the guaranteed operating time tae proportionally. It should only
be increased if a corresponding system leakage capacitance Ce is present in the system to be monitored and
therefore, an extended measuring time is required. A system leakage capacitance Ce higher than the set value
may lead to false alarms.
2.3.9 External test/reset b tton (T/R)
F nctions
•Reset = press the external button < 1.5 s
•Reset + self test = press the external button > 1.5 s
•Stop measuring function = press and hold the external button
When the measuring function is stopped, the display shows “StP”.
Stop mode can also be triggered via an interface command, and in this case it can only be reset via the
interface.
Only one ISOMETER® may be controlled via an external test/reset button.
A galvanic parallel connection of several test or reset inputs for testing multiple insulation monitoring devices
is not allowed.
2.3.10 Fa lt memory
Disabled (OFF)
The LEDs and relays signal the fault as long as it is detected.
Enabled (ON)
The LEDs and relays signal the fault until a reset is performed or the supply voltage Us is disconnected.
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ISOMETER® isoUG 25
2.3.11 History memory HiS
The history memory saves exclusively the measured values for the first fault. The history memory must first be
cleared before new measured values can be saved.
The values checked in the table in section “Displaying measured values”, page 21 can be saved.
2.3.12 Digital interface
The ISOMETER® uses the serial hardware interface RS- 85 with the following protocols:
•BMS
The BMS protocol is an essential component of the Bender measuring device interface (BMS bus protocol).
Data transmission generally makes use of ASCII characters.
•Modb s RTU
Modbus RTU is an application layer messaging protocol, and it provides master/slave communication
between devices that are connected via bus systems and networks. Modbus RTU messages have a 16-bit
CRC (cyclic redundant checksum), which guarantees reliability.
•IsoData
The ISOMETER® sends an ASCII data string with a cycle of approximately 1 second. Communication with
the ISOMETER® in this mode is not possible, and no additional sender may be connected via the RS- 85 bus
cable. The ASCII data string for the ISOMETER® is described in chapter 5. .
The IsoData protocol can be terminated by sending the command “Adr3” during a transmission pause
of the ISOMETER®.
The parameter address, baud rate and parity for the interface protocols are configured in the “out” menu.
With “Adr = 0”, the menu entries baud rate and parity are not shown in the menu and the IsoData protocol
is activated.
With a valid bus address (i.e. not equal to 0), the menu item “baud rate” is displayed in the menu. The
parameter value “---” for the baud rate indicates the activated BMS protocol. In this case, the baud rate
for the BMS protocol is set to 9600 baud. If the baud rate is set unequal to “---”, the Modbus protocol with
configurable baud rate is activated.
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Installation, connection and commissioning
3 Installation, connection and commissioning
3.1 Dimensions
36
93
7 .5
90 5 70.5
7.5
31.1
Figure: Dimension diagram (in mm)
3.2 Installation
2.
1.
3. Click!
107 100
&2 x Ø M4
1 x Click!
!
Figure: DIN rail mounting (left) or screw mounting (right)
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ISOMETER® isoUG 25
3.3 Connection
DANGER Risk of fatal injury due to electric shock!
Touching live parts of the system carries the risk of:
•Risk of electrocution due to electric shock
•Damage to the electrical installation
•Destruction of the device
Before installing the device and before working on its connections, make sure that the installation
has been de-energised. The rules for working on electrical systems must be observed.
The supply voltage Us applied to A1/A2 can be provided by the system voltage (DC+/DC−) when the DC
system voltage is ≥ 24 V . Otherwise a separate power supply is needed.
For details about the conductor cross sections required for wiring, refer to chapter "6 Technical data".
Wiring diagram
AC
DC
US
KE
A1
A2
14
24 11
K1
K2
Test / Reset
COM465IP
RS-485
E
6 A
6 A
DC+
DC-
PE
A
B
R
L-
L+
T/R
ON AL1 AL2 k
T R MENU
Ron
off
14 24 11
AT/R
B
L+
L-
E KE A2A1
Figure: Wiring diagram
isoUG 25_D00220_0 _M_XXEN/10.2023 15

Installation, connection and commissioning
Legend to wiring diagram
Terminal Connections
A1 A2 Connection to the suppl voltage Us via fuse (line protection):
If supplied from an IT s stem, protect both lines b a fuse.*
E KE Separate connection to PE:
Use same wire cross section as for “A1”, “A2”.
L+ L– Connection to the DC s stem to be monitored
Indication in displa : “L1” for L+; “L2” for L-
T/R Connection for the external combined test and reset button
11 14 Connection to alarm rela “K1”
11 24 Connection to alarm rela “K2”
A B RS-485 communication interface with connectable terminating resistor
Example: Connection of a BMS Ethernet gatewa COM465IP
* For UL applications:
Use 60/7 °C copper lines only!
For UL and CSA applications, connect the supply voltage Us via A fuses.
3.4 Commissioning
1. Check that the ISOMETER® is properly connected to the system to be monitored.
2. Connect s pply voltage Us to the ISOMETER®.
The device carries out a calibration, a self test and adjusts itself to the IT system to be monitored. With
high system leakage capacitances this process may take up to min. The standard display then appears
showing the present insulation resistance, e.g.:
The pulse symbol signals an error-free update of the resistance and capacitance measured values. If
the measured value cannot be updated due to disturbances, the pulse symbol will be blanked.
3. Start a man al self test by pressing the test button “T” > 1.5 s. While holding the test button all available
display elements are shown. After releasing the button, the test starts and “tES” flashes for the duration of
the test. Detected malfunctions are displayed as error codes (see chapter 2.3.3.1).
The alarm relays are not checked during the test (factory setting). The setting can be changed in the
“out” menu so that the relays switch to the alarm state during the manual self test.
. Check if the settings are s itable for the system being monitored.
The list of factory settings is shown in the tables from chapter . .
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ISOMETER® isoUG 25
5. Check the f nctionality by a real ins lation fa lt.
Use a suitable resistor to check the ISOMETER® against earth in the system being monitored.
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Operation
4 Operation
4.1 Operating and display elements
Device front Operating elements Function
ON Power LED
AL1 AL2 Alarm LEDs (For codes see “Assigning
the alarm messages to the rela s”,
page 22.)
Up and down buttons
– For navigating up or down in the
menu settings.
– For increasing or decreasing values.
TTest button (press >1.5s)
RReset button (press >1.5s)
Enter button
– Select menu item.
– Save value.
MENU MENU button (press >1.5s)
– Starts menu mode.
– Exits menu item without saving
changes.
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ISOMETER® isoUG 25
Display Display elements Function
US stem voltage Un
RInsulation resistance RF
CS stem leakage capacitance Ce
L1 L2 Monitored conductors
L1 = L+
L2 = L–
Voltage t pe DC
Pulse s mbol: error-free measured
value update
Voltage t pe AC
°C
μ n F Hz
k M Ω %
m V A s
Measured values and units
Password protection is activated
In the menu mode, the operating
mode of the respective alarm rela is
displa ed.
Adr Communication interface with
measured value: isoData operation
MFault memor is activated
test on off Condition s mbols
>
+
<
Identification for response values and
response value violation
The display parameters that can be configured flash.
Depending on the ISOMETER®'s scope of functions, not all display elements are used.
isoUG 25_D00220_0 _M_XXEN/10.2023 19

Operation
4.2 Men overview
Meas rement display Men selection Parameter selection
<
1 s
Edit parameter
save
ESC
ESC
<
1 s
Password (optional)
<
1 s
P
1
. . .
P
n
ESC
>
1.5 s
>
1.5 s
AL
out
t
SEt
InF
HiS
ESC
R [kΩ]
C [ µF]
U L1 L2 [V]
U L1 [V]
U L2 [V]
R [%]
U R [kΩ]
or
t > 5 min
<
1 s
>
1.5 s
<
1 s
>
1.5 s
>
1.5 s
Menu item Parameter
AL Quer ing and setting response values
out Configuring fault memor , alarm rela s and interface
tSetting dela times and self test c cles
SEt Setting device control parameters
InF Quer ing software version
HiS Quer ing and clearing the histor memor
ESC Going to the next-higher menu level
20 isoUG 25_D00220_0 _M_XXEN/10.2023