Bender isoMED427 User manual

isoMED427x-(PT)
Insulation monitoring device for medical applications
isoMED427x-(PT)_D00440_00_M_XXDE Manual EN

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Service and support for ender products
First level support
Technical support
Carl-Benz-Strasse 8 • 5 05 Grünberg • Germany
Telephone: [phone]
0700BenderHelp *
Fax: [phone]
E-mail: [e-mail]
Available from 7.00 a.m. to 8.00 p.m. on 65 days of the year (CET/UTC+1)
* Landline German Telekom: Mon-Fri 09:00 a.m. - 06:00 p.m.: 6. cents / 0 sec.; remaining time:
6. cents / min.
mobile phone: higher, depending on mobile phone tari
Repair service
Repair, calibration and replacement service
Londorfer Strasse 65 • 5 05 Grünberg • Germany
Telephone: [phone] (technical issues) or
[phone], -785 (sales issues)
Fax: [phone]
E-mail: [email protected]
Field Service
On-site service
Telephone: [phone], -762 (technical issues) or
[phone] (sales issues)
Fax: [phone]
E-mail: [e-mail]
Mon-Thu 07:00 a.m. - 04:00 p.m., Fri 07:00 a.m. - 01:00 p.m. (CET/UTC +1)
2 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
Table of contents
1 General instructions.........................................................................................5
1.1 How to use this manual.............................................................................................................................5
1.2 Indication of important instructions and information................................................................... 5
1.2.1 Signs and symbols........................................................................................................................................5
1. Training courses and seminars................................................................................................................ 6
1.4 Delivery conditions...................................................................................................................................... 6
1.5 Inspection, transport and storage..........................................................................................................6
1.6 Warranty and liability..................................................................................................................................6
1.7 Disposal of Bender devices.......................................................................................................................7
1.8 Safety.................................................................................................................................................................7
2 Device-specic safety information................................................................. 8
2.1 Intended use...................................................................................................................................................8
3 Functional description..................................................................................... 9
.1 Alarm and operating messages for each BMS channel............................................................... 10
4 Mounting and connection............................................................................. 12
4.1 Wiring diagram............................................................................................................................................1
4.2 Commissioning............................................................................................................................................14
5 Operating elements....................................................................................... 15
5.1 Display elements isoMED427x-(PT).....................................................................................................16
5.2 Display in standard mode.......................................................................................................................16
5. Alarm indication and EDS activity....................................................................................................... 17
6 Parameter settings......................................................................................... 18
6.1 Menu overview............................................................................................................................................19
6.2 Setting the response value Ran (<R)....................................................................................................20
6. Setting the response value for load current monitoring.............................................................20
6.4 Setting the response value overtemperature ( >°C) (isoMED427P-PT)..................................20
6.5 Setting the operating principle of the alarm relay........................................................................20
6.6 Setting the BMS address......................................................................................................................... 20
6.7 Activating automatic insulation fault location................................................................................21
isoMED427x-(PT)_D00440_00_M_XXDE

Table of contents
6.8 Password protection................................................................................................................................. 21
6.9 Deactivating the CT monitoring function........................................................................................ 22
6.10 Resetting the device to factory settings........................................................................................... 22
6.11 Querying device information.................................................................................................................2
7 Technical data isoMED427(P)-(PT)................................................................ 24
7.1 Factory settings isoMED427x-(PT)....................................................................................................... 29
7.2 Device overview.......................................................................................................................................... 0
7. Recommended device combinations................................................................................................. 1
7.4 Standards and certications.................................................................................................................. 1
4 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
1 General instructions
1.1 How to use this manual
This manual is intended for qualied 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".
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 instructions 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.
Information can help to optimise the use of the product.
1.2.1 Signs and symbols
Disposal Protect from moisture Protect from dust
Temperature range Recycling RoHS directives
isoMED427x-(PT)_D00440_00_M_XXDE 5

General instructions
1.3 Training courses and seminars
Regular face-to-face or online seminars for customers and other interested parties:
www.bender.de -> Fachwissen -> Seminare.
1.4 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:
"Softwareklausel zur Überlassung von Standard- Software als Teil von Lieferungen,
Ergänzung und Änderung der Allgemeinen Lieferbedingungen für Erzeugnisse
und Leistungen der Elektroindustrie" (software clause in respect of the licensing
of standard software as part of deliveries, modications and changes to general
delivery conditions for products and services in the electrical industry)
1.5 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 notied immediately, see "Technical support: Service
and support".
The following must be observed when storing the devices:
1.6 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.
6 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
•Catastrophes caused by external inuences 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.
1.7 Disposal of ender 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.
1.8 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 and connecting the device, make sure that the installation has been de-
energised. The rules for working on electrical systems must be observed.
isoMED427x-(PT)_D00440_00_M_XXDE 7

Device-specic safety information
2 Device-specic safety information
CAUTION Risk of property damage due to unprofessional installation!
If more than one insulation monitoring device is connected to a conductively connected
system, the system may be damaged. If several devices are connected, the device does not
work and does not signal insulation faults.
Make sure that only one insulation monitoring device is connected in each conductively
connected system.
CAUTION Ensure disconnection from the IT system!
When insulation or voltage tests are to be carried out, the device must be isolated from the
system for the test period. therwise the device may be damaged.
nly one IS METER® may be connected to a system to be monitored.
2.1 Intended use
ISOMETER®s of the isoMED427x-(PT) series monitor the insulation resistance of a medical IT
system with AC 70…264 V. In addition, the load current and the temperature of the IT system
transformer are monitored. Alarms and measured values are provided to other bus devices via
the BMS interface. For display and signalling purposes, the use of special alarm indicator and test
combinations is recommended.
After detection of an insulation fault, the internal locating current injector of the isoMED427P-
(xx) models enables insulation fault location. The use of special devices of the EDS series is
recommended to locate the insulation fault.
Devices of the isoMED427x-(PT) series do not require an additional supply voltage. The
maximum permissible system leakage capacitance is 5 μF.
In order to meet the requirements of 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 than that described in this manual is regarded as improper.
8 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
3 Functional description
During regular operation, the display shows the present insulation resistance. Use the arrow-up
or arrow-down button to display the present load current in %. The isoMED427P-PT also displays
the present transformer temperature. If the insulation resistance falls below the response
value, the AL1 LED signals an insulation fault. AL2 lights up if the load current is too high or the
temperature of the monitored IT system transformer is too high. The alarm relay K1 signals all
alarm categories. In addition, a bus signal is provided at terminals A, B for insulation fault locators
as well as alarm indicator and test combinations.
The detected insulation fault activates the internal locating current injector for insulation fault
location if the EDS function was previously enabled in the menu (factory setting = o). A positive
and a negative locating current pulse is injected into the monitored IT system alternately for 2 s
each. There is a 4 s pause between positive and negative pulse.
The isoMED427P-(PT) models can only be operated as BMS slave. Therefore, the alarm indicator
and test combination or the respective insulation fault locator take over the master function.
BMS masters always have BMS address 1.
Automatic self test
The device runs a self test after connecting the supply voltage and after that every hour. During
the self test, internal malfunctions or connection faults are detected and shown as an error code
on the display. The alarm relay is not switched during the self test.
Manual self test
The device runs a self test after pressing the test button "T" or the external test button for > 2 s.
Any internal malfunctions or connection faults detected during this test are shown as an error
code on the display. The alarm relay is switched during the self test.
While the test button "T" is pressed, all display elements available for this device are shown.
Malfunction
In the event of a malfunction, relay K1 switches and all three LEDs ash. The display shows an
error code.
E.01 Protective conductor connection faulty, no low-resistance connection between E and KE.
E.0 Measuring current transformer interruption
E.04 Measuring current transformer short circuit
E.05…E.xx Internal device error, contact Bender service.
isoMED427x-(PT)_D00440_00_M_XXDE 9

Functional description
Password protection
If the password protection has been enabled, settings can only be made after entering the
correct password.
Factory settings FAC
After restoring the factory settings, all settings previously changed are reset to the state upon
delivery.
Monitoring of the IT system transformer
For temperature monitoring, the isoMED427P-PT device evaluates the resistance value of the
temperature sensor. If the switching threshold of 4 kΩ (isoMED427x) or the set temperature value
(isoMED427P-PT) is reached, an overtemperature alarm is triggered. The display shows " > °C".
Temperature values are only displayed on the isoMED427P-PT.
To avoid overloading the transformer, the load current and temperature must always be
monitored simultaneously. Please observe the wiring diagram!
3.1 Alarm and operating messages for each MS channel
isoMED427P and isoMED427P-PT provide alarm and operating messages for other bus devices.
These can be queried by a BMS master, e.g. an alarm indicator and test combination.
Alarm messages
MS channel
MS channel
Description
Description
1Insulation fault: Insulation resistance RF below the response value Ran
2 Overcurrent in %: Load current above the response value
Overtemperature: Transformer temperature above the response value
4 Connection fault PE
5 CT connection for current measurement interrupted
6 CT connection for current measurement short-circuited
7 Device error, internal
9 Start of the EDS system in continuous operation without pause time
10 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
Operating messages
MS channel
MS channel
Description
Description
1Currently measured insulation resistance RF
2 Currently measured load current in %
8 Current transformer temperature in °C (isoMED427P-PT only)
isoMED427x-(PT)_D00440_00_M_XXDE 11

Mounting and connection
4 Mounting and connection
DANGER Risk of fatal injury due to electric shock!
Touching live parts of the system carries the risk of an electric shock.
•Before installing and connecting the device, make sure that the installation has
been de-energised.
•The rules for working on electrical systems must be observed.
dimensional
drawing
6
9
74,5
90 45 70,5
47,5
1,1
•DIN rail mounting:
Snap the rear mounting clip of the device into place in such a way that a safe and
tight t is ensured.
•Screw mounting:
A second mounting clip is required (see ordering information). Use a tool to place the
mounting clips in a position that protrudes beyond the enclosure. Fix the device with
two M4 screws, see sketch.
12 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
4.1 Wiring diagram
DANGER Risk of electrocution due to electric shock!
If terminals L1, L2 of the device are connected to an energised IT system, terminals E and KE
must not be disconnected from the protective conductor (PE).
Connect the device according to the wiring diagram.
The lines to KE and E must be routed separately!
The BMS bus must be terminated at both ends!
Ron
o
A
B
R
J-Y(St)Y 2x2x0,6
T1
T2
6A6A
STW2
N
L
k
AL2AL1
ON
T
RMENU
A
B
T2
T1
14
12
11
l
Z/k
Z
E KE L1 L2
MK ...
AB
EDS ...
AB
Terminal Connections
E, KE Separate connection of E and KE to PE
L1, L2 Connection to the IT system to be monitored; supply voltage (see nameplate) via 6 A
fuse
Z, Z/k Connection to temperature sensor acc. to DIN44081 (isoMED427x)
Connection to temperature sensor PT100 (isoMED427P-PT)
Z/k, l Connection to measuring current transformer (STW2)
T1, T2 Connection to external test button
A,
RS-485 interface,
terminate connection to R switch (on/o), when the device is connected to the bus
end.
11, 12, 14 Alarm relay K1
isoMED427x-(PT)_D00440_00_M_XXDE 1

Mounting and connection
4.2 Commissioning
Prior to commissioning, check proper connection of the ISOMETER®.
Perform a functional test using a genuine earth fault, e.g. via a suitable resistance.
14 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
5 Operating elements
Device front Element Function
Power on LED
Alarm LED 1 is lit:
Below response value Ran
Alarm LED 2 is lit:
Response value % I or/and °C exceeded
"T": Start a self test (2 s)
: Menu item up / increase value
: Menu item down / decrease value
Start menu mode (2 s)
Enter button:
(< 1.5 s): Conrm menu item, submenu item, value.
(> 2 s): Return to the next higher menu level
isoMED427x-(PT)_D00440_00_M_XXDE 15

Operating elements
5.1 Display elements isoMED427x-(PT)
After activating the test function (T), all available display elements are shown for 2 seconds.
< | - | > Identier for response values
7-segment display Display of the values
Upper row R : Insulation resistance
I : Fault current
. : Measuring pulse (ashing)
1 : Relay
% | °C
k | M | Ω
A
Measurement units
(°C for isoMED427P-PT only)
on | o State values
Adr BS bus address enabled
Relay operating mode
Ω
M
k
C
°
Password protection enabled
5.2 Display in standard mode
If there is no alarm pending, the ON LED is lit and the currently measured values are shown on
the display. The arrow-up/arrow-down buttons can be used to switch between the insulation
resistance value, the percentage load current and the transformer temperature. If the Enter
button is pressed after changing the display, the displayed measurement category remains.
C
°
AL1
AL2
l
AL1
AL2
Ω
k
.
R
AL1
AL2
isoMED427P-PT
16 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
5.3 Alarm indication and EDS activity
Display examples:
AL1
AL2
C
°
>
AL2
AL1
>
AL2
AL1
l
>
AL2
AL1
on
AL1
AL2
Ω
k
R
>
AL1
AL2
isoMED427P-PT
isoMED427(P)
If dierent alarms occur simultaneously, the display changes at -second intervals. If several
errors occur, the respective error codes are displayed alternately.
isoMED427x-(PT)_D00440_00_M_XXDE 17

Parameter settings
6 Parameter settings
An example is given below on how to change the alarm response value Ran (< R). Proceed as
follows:
1. Press and hold the MENU/Enter button for 2 s. The ashing short symbol < R appears on the
display.
2. Conrm with Enter. A ashing display shows the currently set response value in kΩ.
. Use the arrow-up or arrow-down button to set the appropriate value. Conrm with Enter.
The ashing short symbol < R appears.
4. The following options are available to exit the menu:
uPress and hold the Enter button for 2 s to go up one menu level
uSelect the menu item ESC and conrm with Enter to go up one menu level.
The areas of the display which can be congured ash! In the gures below, the segments
where device settings can be carried out are highlighted by an oval
menu mode can be accessed by pressing and holding the "MENU" button for 2 s.
18 isoMED427x-(PT)_D00440_00_M_XXDE

isoMED427x-(PT)
6.1 Menu overview
< 1 s
< 1 s
< 1 s
P
1
. . .
P
n
ESC
> 1.5 s
> 1.5 s
< R [kΩ]
> I [mA]
> °C [
°C]
1
Adr
EdS
Sub
ESC
< R [kΩ]
> I [mA]
> °C [
°C]
or
t > 5 Min.
< 1 s
Ω
k
> 1.5 s
< 1 s
> 1.5 s
> 1.5 s
* The current temperature is only displayed on the isoMED427P-PT model.
Menu Congurable parameters
< R Query and set the insulation monitoring response value
> I Query and set the load current monitoring response value in A
> °C Set the response value for overtemperature (isoMED427P-PT only)
1Select N/O or N/C operation for K1
Adr Setting the BMS address
EdS Activate or deactivate automatic insulation fault location
Access to the submenu and return from the submenu
Enable or disable password protection, change password
ct Activate or deactivate CT monitoring
FAC Restore factory settings
InF Query software version
ESC Next higher menu level
Sub
SYS Service menu SyS locked
ESC Exit menu
isoMED427x-(PT)_D00440_00_M_XXDE 19

Parameter settings
6.2 Setting the response value Ran (<R)
Use this setting to dene the insulation value below which an alarm is signalled.
2 s
Ω
k
R
>
Ω
k
R
>
Ω
k
R
>
Ω
k
R
>
2 s
6.3 Setting the response value for load current monitoring
2 s
A
l
>
A
l
>
A
l
>
A
l
>
1x
Ω
k
R
>
2 s
6.4 Setting the response value overtemperature ( >°C) (isoMED427P-PT)
2 s
C
°
>
C
°
>
C
°
>
C
°
>
x
R
>
2 s
6.5 Setting the operating principle of the alarm relay
Use this menu to set the operating principle of the alarm relay K1 (1) to N/O operation (n.o.) or N/
C operation (n.c.):
2 s
1
1
1
1
2x
Ω
k
R
>
2 s
6.6 Setting the MS address
2 s
Adr
Adr
Adr
Adr
x
Ω
k
R
>
2 s
20 isoMED427x-(PT)_D00440_00_M_XXDE