Bender MEDICS UMC107E-25, MEDICS UMC107E-40, MEDICS UMC107E-65, MEDICS UMC107E-80 Operating Manual
Operating Manual
Power in electrical safety
MEDICS® UMC107E-..
Two-pole
changeover and monitoring modules
for medical locations
TGH1322en/06.2009
Dipl.-Ing. W. Bender GmbH & Co.KG
Londorfer Str. 65 • 35305 Grünberg • Germany
Postfach 1161 • 35301 Grünberg • Germany
Tel.: +49 6401 807-0
Fax: +49 6401 807-259
E-mail: info@bender-de.com
Web: http://www.bender-de.com
© Dipl.-Ing. W. Bender GmbH & Co.KG
All rights reserved.
Reprinting only with permission
of the publisher.
Subject to change!
Table of Contents
1. How to use this operating manual effectively ................................................... 5
1.1 How to use this manual ......................................................................................................... 5
1.2 Explanations of symbols and notes ................................................................................... 5
2. Safety instructions .................................................................................................. 7
2.1 Intended use .............................................................................................................................. 7
2.2 Skilled persons .......................................................................................................................... 7
2.3 Device-specific safety information .................................................................................... 8
2.4 General safety instructions ................................................................................................... 8
2.5 Delivery conditions, guarantee, warranty and liability .............................................. 8
3. System description ................................................................................................. 9
3.1 MEDICS® ...................................................................................................................................... 9
3.2 UMC107E.. features .............................................................................................................. 10
3.3 Functionality UMC107E-.. ................................................................................................... 11
3.3.1 The UMC107E-... changeover and monitoring module .......................................... 11
3.3.2 IT system monitoring ........................................................................................................... 11
3.3.3 Monitoring the device functions ..................................................................................... 12
3.3.4 Power supply .......................................................................................................................... 12
3.4 System components ............................................................................................................12
3.5 Front view UMC107E-.. .......................................................................................................13
3.6 UMC107E-.. design plan ...................................................................................................... 14
4. Installation and connection ............................................................................... 15
4.1 Fuses .......................................................................................................................................... 15
4.1.1 Selecting a fuse with only one load ............................................................................... 15
4.1.2 Selecting a fuse with several loads ................................................................................. 16
4.2 Changeover and monitoring module ........................................................................... 17
4.2.1 Typical connection ............................................................................................................... 17
4.2.2 Wiring diagram ...................................................................................................................... 18
4.2.3 Circuit diagram ...................................................................................................................... 19
4.3 Instructions for connection ............................................................................................... 20
4.3.1 Temperature sensor ............................................................................................................. 20
4.3.2 Alarm indicator and test combination .......................................................................... 20
TGH1322en/06.2009
3
Table of Contents
4.3.3 SCADA system (Supervisory Control And Data Acquisition) ................................. 20
5. Commissioning, settings and testing ............................................................... 21
5.1 Setting and testing according to the checklist ........................................................... 21
5.1.1 Avoiding errors ....................................................................................................................... 21
5.2 Assigning addresses-examples ........................................................................................ 22
6. Trouble shooting .................................................................................................. 23
6.1 PRC487 error messages ....................................................................................................... 23
6.2 Fuses F1...F11 ........................................................................................................................... 24
7. Periodic verification and service ....................................................................... 25
7.1 Periodic verification .............................................................................................................. 25
7.1.1 Testing the changeover module ...................................................................................... 26
7.2 Service ........................................................................................................................................ 26
7.3 Maintenance ............................................................................................................................ 26
8. Data ......................................................................................................................... 27
8.1 TÜV-test report ....................................................................................................................... 27
8.2 Standards .................................................................................................................................. 28
8.3 Manufacturer's certificate ...................................................................................................28
8.4 Technical data ......................................................................................................................... 28
8.4.1 Dimension and weights ......................................................................................................30
8.5 Ordering information ........................................................................................................... 30
9. Manufacturer's certificate, checklist, circuit documentation ..................... 31
4
TGH1322en/06.2009
How to use this operating manual effectively
1. How to use this operating manual effectively
1.1 How to use this manual
This operating manual describes how to operate the UMC107E-... changeover and monitoring
module. It is designed for skilled persons working in electrical engineering and electronics;
and in particular for those designing, installing and operating electrical equipment in the
medical sector.
Before using the equipment, please read this operating manual, the supplement entitled "Important safety instructions for Bender Products" and the instruction leaflets supplied with the
individual system components. This document must be kept in an easily accessible location
near to the equipment.
Should you have any further questions, please contact our Technical Sales Department. We
are also happy to provide on-site service. Please contact our Service Department for more
information.
In this manual, the two redundant supplies for the power supply will be designated "preferred supply" or "line 1" and "second supply" or "line 2". Devices with displays use the terms
"line 1" and "line 2" in the text they indicate.
This manual has been compiled with great care. Nevertheless errors and omissions cannot
be entirely excluded. The Bender Group cannot accept any liability for injury to persons or
damage to property resulting from errors or mistakes in this operating manual.
1.2 Explanations of symbols and notes
The following terms and symbols are used to denote hazards and instructions in Bender documentation:
This symbol indicates an immediate risk to life and limb.
Failure to observe the associated instructions and take appropriate precautions
will result in death, severe bodily injury or substantial damage to property.
Danger!
This symbol indicates a potential risk to life and limb.
Failure to observe these warnings and take appropriate precautions may result
in death, severe bodily injury or substantial damage to property.
Warning
This symbol indicates a potentially dangerous situation.
Failure to observe the associated instructions and take appropriate precautions
may result in minor bodily injury or damage to property.
Caution
TGH1322en/06.2009
5
How to use this operating manual effectively
This symbol indicates important information about the correct use of the equipment purchased.
Failure to observe the associated instructions can result in equipment malfunctioning or cause problems in the environment in which it is being used.
This symbol indicates tips for using the equipment and particularly useful information. This type of information will help you to optimise your use of the equipment.
6
TGH1322en/06.2009
Safety instructions
2. Safety instructions
2.1 Intended use
The UMC107E-.. changeover and monitoring module is a two-pole, automatic changeover
module for distribution systems used in medical locations group 1 and 2, in accordance with
IEC 60364-7 710: 2002-11, section 710.313.1 and DIN VDE 0100-710 (VDE 0100 Part
710):2002-11, section 710.537.6.2 extended by the IT system monitoring functions in accordance with IEC 60364-7-710:2002-11, section 710.413.1.5 and DIN VDE 0100-710 (VDE 0100
part 710):2002-11, section 710.531.3.1.
It is used in medical locations and monitors the power supply using two independent singlephase supply sources and the AC IT system.
The UMC107E-.. module
z detects whether the preferred supply has failed and automatically performs a two-pole
changeover to the second supply source.
z monitors the insulation resistance in the downstream IT system.
z monitors the load current and temperature of isolating transformers for the IT system.
Customised parameter settings must be made on the equipment for the purpose of adapting
it to local equipment and operating conditions, in order to meet the requirements of applicable standards.
The equipment can also be used in non-medical areas provided that the intended application
has been cleared with Bender in advance.
Please note the limits of the area of application indicated in the technical data.
Use deviating from or beyond the scope of this is considered non-compliant.
Intended use also implies:
z Device-specific settings in accordance with IEC 60364-7-710:2002-11, sections 556.5.2.2, 556.7,
556.8 and DIN VDE 0100-710 (VDE 0100 Part 710):2002-11, section 710.537.6.2 (changeover
periods) and for the IT system.
z The observation of all information in the operating manual.
z Compliance with test intervals.
2.2 Skilled persons
Only electrically skilled persons may work on Bender products. Skilled means, persons who
are familiar with the assembly, commissioning and operation of the equipment and have undergone appropriate training. Such persons must have read this manual and understood all
instructions relating to safety.
TGH1322en/06.2009
7
Safety instructions
2.3 Device-specific safety information
Device-specific settings are required in order to adapt the MEDICS® module to
the existing equipment. To this end, refer to the instructions in chapter "5. Commissioning, settings and testing", page 21ff.
Warning
2.4 General safety instructions
Bender equipment is designed and built in accordance with the state of the art and accepted
rules in respect of technical safety. However, the use of such devices may introduce risks to
the life and limb of the user or third parties and/or result in damage to Bender equipment
or other property.
z Only use Bender equipment:
–as intended
– in perfect working order
– in compliance with the accident prevention regulations and guidelines applicable in the
location of use
z Rectify any faults that may impair safety immediately.
z Do not make any unauthorised changes and only use replacement parts and optional accesso-
ries purchased from or recommended by the manufacturer of the equipment. Failure to
observe this requirement can result in fire, electric shock and injury.
z Reference plates must always be clearly legible. Replace damaged or illegible plates immedi-
ately.
z Make sure that the dimensioning of the UPS (special safety power supply source), the generator
system and the whole wiring is adequate. Observe the applicable national and international
standards within this context. Only in this way, selective operation of safety devices can be
achieved and a high degree of safety in case of overload and short circuit can be ensured.
2. 1 Delivery conditions, guarantee, warranty and liability
The conditions of sale and delivery set out by Bender shall apply.
Conditions of sale and delivery can be obtained from Bender in printed and electronic format.
8
TGH1322en/06.2009
System description
3. System description
3.1 MEDICS
The UMC107E-.. changeover and monitoring module is a part of the MEDICS® system.
MEDICS
supplies in medical locations.
Example of a section of a hospital with the MEDICS®system
®
does not refer to a single product, but rather an intelligent system for safe power
®
Key for example
MK... Alarm indicator and test combination
RCMS... Residual current monitoring system for TN-S systems
SMI472 Signal converter for third-party technical equipment (e.g. med. gases, UPS)
TM Alarm indicator and operator panel
UFC107E... Changeover and monitoring module for IT systems with EDS... insulation fault
UMC107E... Changeover and monitoring module for IT systems
UMC710D... Changeover module for main distribution boards
USC710D... Control module for changeover modules (preferably in main distribution
TGH1322en/06.2009
location system
boards)
9
System description
MEDICS® includes:
z AC and 3(N)AC changeover and monitoring modules. Examples of modules in the MEDICS
®
sys-
tem include UMC..., USC..., UFC... and EDS.... insulation fault location systems.
z Display and operating units such as alarm indicator and operator panels or alarm indicator and
test combinations.
z Communication between these components takes place via the BMS bus (two-wire connec-
tion).
z The connection of third-party technical equipment by means of protocol converters (gate-
ways), via digital inputs and relay outputs.
The real strength of MEDICS
®
is to be found in communication between all involved components and the resulting information provided to the user. Readiness for operation is monitored continuously. Operating states, irregularities, faults and equipment failures are
displayed. From the user's point of view, this means high operational reliability.
3.2 UMC107E.. features
The UMC107E-.. changeover and monitoring module has the following features:
z Two-pole changeover with contactors. Both contactors have a mechanical latching.
z Voltage monitoring on the preferred supply (line 1)
z Voltage monitoring on the second supply (line 2)
z Voltage monitoring at the output of the changeover and monitoring module (line 3)
z Monitoring of the switching elements to ensure that they are in the correct switching state and
for wire breaks (connecting wires, contactor coil, coil for latching module)
z Internal functional testing including checking of the changeover times
z Monitoring of the insulation resistance in the IT system
z Monitoring of the IT system transformer load current
z Monitoring of the IT system transformer load temperature
z Monitoring of the A-ISOMETER® 107TD47 connecting wires
z Communication of components with one another via BMS bus
z Communication with remote alarm indicator and test combinations and TM alarm indicator
and operator panels via BMS bus
z Possibility to set the time delay for the changeover in 50 ms increments for adaptation to the
total off-time acc. to DIN VDE 0100-710 (VDE 0100 Part 710):2002-11, section 710.537.6.2k
z Can be used in systems in accordance with IEC 60364-7-710:2002-11, sections 556.5.2.2, 556.7
and 556.8 and DIN VDE 0100-710 (VDE 0100 Part 710):2002-11, section 710.564.6 with a changeover period = 15 s or = 0.5 s
Warning
10
®
The MEDICS
module is a configured unit and is only certified and tested in this
assembly. Do not make any changes to the components, their password-protected settings or the wiring without consulting Bender first.
In each case you shou ld ma ke th e sett ings that are required for adaptation to the
application case in question and local conditions.
TGH1322en/06.2009
System description
3.3 Functionality UMC107E-..
3.3.1 The UMC107E-... changeover and monitoring module
If the preferred supply should fail, the UMC107E-.. ensures safe changeover of the
power supply:
1. In normal condition (fault-free condition), the preferred supply (line 1) is connected via contactor K1 and mechanically latched. This makes it impossible for the IT supply to fail on account of
defective contactor coils, torn lines to the contactor coil, or a failure of the control voltage.
2. If the voltage at the end of the preferred supply falls below the set value or exceeds a value of
115 % x U
response time t(off) has elapsed, K1 is disconnected and, following the set idle time t(K1-2), K2
is connected and latched.
3. On voltage recovery, switching back to the preferred supply source occurs automatically after
the set return transfer time t(on) has elapsed: K2 is disconnected and, following the set idle
time t(K1-2), K1 is connected and latched.
Warning
, the module automatically changes over to the second supply (line 2): Once the set
n
The response time t(off), the idle time t(K1-2) and the return transfer time t(on) of
the UMC107E-.. can be set and must be adjusted according to the requirements
of the specific application case, the short-circuit calculation and the requirements of IEC 60364-7-710:2002-11, sections 556.5.2.2, 556.7 and 556.8 and DIN
VDE 0100-710 (VDE 0100 Part 710):2002-11, section 710.537.6 (automatic
changeover modules) (see chapter 5. "Commissioning, settings and testing").
The settings made at the factory ensure a changeover period of t = 0.5 seconds and switching
back within five seconds on voltage recovery on the preferred supply. Therefore, the
UMC107E-.. can also be used in IT systems with a requirement for a changeover period t =
0.5 seconds (IT systems with operating theatre lighting circuits, endoscopic field illumination
in operating theatres, or other essential sources of light, etc.).
If the control device detects a supply line failure or a fault, a message appears in the LC display, the "ALARM" LED lights up, the alarm relay switches, and this alarm is transmitted to
other Bender devices (such as alarm indicator and test combinations) via the BMS bus.
3.3.2 IT system monitoring
Insulation monitoring
The insulation monitoring device measures the insulation resistance in AC IT systems which
may also contain DC circuits. The adaptation to the system leakage capacitances takes place
automatically.
Load current measurement
The load current is measured via the measuring current transformer STW2.
Temperature measurement
The temperature in the transformer winding is measured via PTC thermistors.
Evaluation
If any of the measured values does not fall within the limits, an alarm (common alarm) is
triggered. The "ALARM" LED lights up, the alarm relay switches and a message appears in
the LC display of the insulation monitoring device. This alarm is transmitted to other Bender
devices (such as an alarm indicator and test combination) via the BMS bus.
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11
System description
3.3.3 Monitoring the device functions
The control circuits are constructed in such a way that even if a particular fault will almost
certainly occur, it cannot cause the power supply at the output of the automatic changeover
and monitoring module to fail. Examples: Failure of the control voltage, operation of a protective device, a short-circuit to exposed-conductive part or an earth fault, and an open circuit.
In addition to this, the module continuously monitors:
z The control circuit that is required for the next changeover process (coil, control contacts, con-
nections)
z Important connecting wires, such as
– the insulation monitoring mains/PE
– measuring current transformer
– temperature sensor
z For alarm indicator and test combinations, and alarm indicator and operator panels, device fail-
ure monitoring can also be programmed via the BMS bus.
Thanks to the redundant hardware design of the changeover module, it is guaranteed to
function safely even if the microcontroller should fail.
3.3.4 Power supply
SUE487 provides the power supply for the PRC487 control device and the AN450 power supply unit, as well as the control voltage for the contactors from line 2, (or from line 1 if line
2 fails). The 107TD47 insulation monitoring device is supplied by the IT system.
The AN450 power supply unit supplies power to a maximum of 3 MK2418 or 2 MK2430
alarm indicator and test combinations.
3.4 System components
In chapter "9. Manufacturer's certificate, checklist, circuit documentation" of this operating
manual, you will find instruction leaflets containing detailed information about the following
system components:
PRC487 Control device for changeover modules
SUE487, SUD487 Voltage relay
A-ISOMETER®107TD47 Insulation monitoring device with transformer
monitoring
BMS bus Bender Measuring Device Interface
AN450 Power supply unit
STW2 Measuring current transformer
12
TGH1322en/06.2009
System description
3.5 Front view UMC107E-..
Terminal compartment
Contactor with latching module
SUE487 voltage monitoring device
Control device PRC487
Power supply unit AN450
107TD47 A-ISOMETER® to monitor the insulation resistance, as well as transformer load
and temperature
Example: UMC107E-... front view on a Striebel & John equipment rack.
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13
3.6 UMC107E-.. design plan
X1, X2, X3: Terminal strips
F1...F11: Fuses see "chapter 6.2"
T2: STW2 measuring current transformer for
load current measurement
System description
K1: Contactor for line 1 with
K6: latching module
K2: Contactor for line 2 with
K7: latching module
N1: SUE487 voltage monitoring device
R1, R2: Resistors 30 kΩ, 2 W
N3: Control device PRC487
T1: Power supply unit AN450
N4: A-ISOMETER®107TD47
Example: Design plan UMC107E-... on a Striebel & John equipment rack.
14
TGH1322en/06.2009
Installation and connection
4. Installation and connection
4.1 Fuses
Please observe the requirements of IEC 60364-7-710:2002-11 and DIN VDE 0100-710 (VDE
0100 Part 710) when selecting fuses for the supply cables and outgoing circuits of the
changeover modules:
z Section: 710.512.1.6.2 (VDE), sections 710.5.3.1, 710.512.1.6 (IEC), Transformers for the IT system:
Where transformers, their primary supply conductor and secondary outgoing line are concerned, overcurrent protective devices are only permitted for short-circuit protection. The
transformer supply cable from the changeover module and the transformer outgoing cable to
the next distribution board section should be laid so that they are short-circuit proof and earthfault proof.
z Section: 710.53.2 (VDE), section 710.413.1 (IEC), Protection of the cable system in Group 2 loca-
tions: The choice of protective devices must ensure that when the anticipated short-circuit current occur, the protective device upstream of a fault will selectively trip the protective devices
that are further upstream.
z Section 710.537.6.2. (VDE), section 710.413.1.1 (IEC), Connecting several load groups down-
stream of a changeover module must not lead to all the load groups failing in the event of a
fault.
As a result, the choice of fuses F should ensure both short-circuit protection for the transformer and selectivity for the overcurrent devices connected downstream in the IT systems.
When selecting fuses, please observe both the maximum permissible values laid down by
the guidelines that apply to the location of use and national and international standards, in
order to ensure that the contactor contacts cannot weld. The considerations presented below
are based on the standard DIN VDE 0100-710 (VDE 0100 Part 710): 2002-11, section
710.537.6.
4.1.1 Selecting a fuse with only one load
F1 F2
2
2
Changeover module
Contactors with latching
TGH1322en/06.2009
Circuit breaker
15
Installation and connection
The circuit only has one load: the IT system transformer. Taking into consideration the explanation in section 710.537.6 as well as the manufacturer's technical data for the contactor,
the maximum possible fuse (F1 or F2) for the contactor can be calculated as follows:
= Manufacturer's technical data regarding max. fuse x 0.45
I
v
The fuse must match the fuse specified by the manufacturer of the selected IT system transformer.
The rated operational current I
= Manufacturer's technical data for the switching contact with consideration of
I
e
of the changeover module is calculated as follows:
e
AC-3 conditions x 0.45
This rated operational current must be greater than the rated operational current of the IT
system transformer.
4.1.2 Selecting a fuse with several loads
F1 F2
2
F3 F4
2
Changeover module
Contactors with latching
F5
Circuit breaker
This circuit branches into several load groups. The result is that every fuse of every load
group is moved downstream of the changeover module. Regardless of this, the maximum
possible fuse is calculated in the same way as described above.
The rating of this fuse (F1 or F2) must be coordinated with the rating of fuse F3 (and of
course F4 and F5) so that selective shutdown is ensured. The fuse specified by the manufacturer for the IT system transformer must therefore be at least two stages smaller in rating
than the fuse calculated using the formula above for the changeover module. Of course, the
total nominal current for the changeover module must be calculated from the sum and simultaneity factor of all load groups connected, and the required or minimum rated current calculated according to the formula above.
The values listed in the ordering information apply for the changeover modules.
16
TGH1322en/06.2009
Installation and connection
4.2 Changeover and monitoring module
The power supply of Group 2 location is supplied via an isolating transformer. For protection
against indirect contact, one of the following measures is to be used for the transformer:
z Protective insulation according to DIN VDE 0100-410 (VDE 0100 Part 410):2007-06, 413.2 (Use of
a protection class II transformer)
z Protection by non-conductive location according to DIN VDE 0100-410 (VDE 0100 Part
410):2007-06, section 413.3
z Protection by a local, earth-free equipotential bonding according to DIN VDE 0100-410 (VDE
0100 Part 410):2007-06, section 413.4
z Protection by special installation. For this measure, please note the following:
– The protection class I transformer must be installed isolated and must not be connected to
the PE conductor. In Bender's ES710 range of transformers, the fixing angles are isolated
from the transformer core.
– A warning label is to be affixed to the transformer and its cover as follows:
Warning! Accessible parts of the transformer may
be live. You must always verify that there is no
voltage present before touching parts of it.
– The transformer is to be installed behind a cover, which can only be opened using a tool or a
special key. It must only be accessed by skilled persons.
– The shield winding can be connected to the PE conductor. It must be ensured that the con-
necting wire is installed so that it is short-circuit proof and earth-fault proof.
4.2.1 Typical connection
Connect your changeover module to the supply sources as follows:
Preferred supply (line 1) Terminals X1:1 and X1:2
Second supply (line 2) Terminals X1:3 and X1:4
z Connect the primary winding of the transformer to the terminals X1:5 and X1:9 and the second-
ary winding to terminals X1:7 and X1:11. A cross section that conforms to DIN VDE 0100 Part
430 must be selected.
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17
4.2.2 Wiring diagram
Installation and connection
18
Fig. 4.1: Wiring diagram UMC107E-...
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Installation and connection
4.2.3 Circuit diagram
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Fig. 4.2: Circuit diagram UMC107E-...
19
Installation and connection
4.3 Instructions for connection
4.3.1 Temperature sensor
Bender IT system transformers are equipped with the temperature sensors required according to their insulation class. These temperature sensors (maximum of 6 sensors connected in
series) are connected to terminals X3:35 and X3:36.
4.3.2 Alarm indicator and test combination
Ex works, the following pairs of terminals are provided for the connection of BMS bus devices:
X3:29 and X3:30 (A/B)
X3:31 and X3:32 (A/B terminals are terminated with 120 Ω at the factory)
Alarm indicator and test combinations, panels and other Bender-BMS-bus devices can be
connected.
1. A BMS device or an existing BMS bus with several devices is connected to terminals X3:29 and
X3:30:
The last device at the other end of the bus must be terminated with 120 Ω.
Terminals X3:31 and X3:32 remain terminated.
2. An existing BMS bus that has already been terminated on both ends, is disconnected; one
open branch is connected to terminals X3:29 and X3:30, while the other one is connected to
terminals X3:31 and X3:32:
The 120 Ω resistor, provided ex works, must be removed and the open bus branches must be
connected to the specified terminals.
Please read the information on cable routing in the "BMS bus" instruction leaflet.
The AN450 power supply unit can supply power to a maximum of 3 MK2418 or 2 MK2430
alarm indicator and test combinations via the terminals X3:33 and X3:34. In this respect,
please refer to the documentation for the relevant devices. The AN450 is not suitable for supplying power to TM... operator panels.
4.3.3 SCADA system (Supervisory Control And Data Acquisition)
If messages from the UFC107E-.. changeover and monitoring module are to be transmitted
to a SCADA system, you have the following options:
z Protocol converter (gateways)
z OPC server
z Common alarm via the relay outputs of the 107TD47 A-ISOMETER® and the PRC487 control
device
z Conversion between BMS bus and digital inputs and outputs by means of alarm indicator and
operator panels (TM...) or signal converters (SMO480-12, SMO482-12, SMI 472-12).
20
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Commissioning, settings and testing
5. Commissioning, settings and testing
5.1 Setting and testing according to the checklist
A total changeover time of t ≤ 0.5 s and switching back within five seconds to the preferred
supply on voltage recovery is factory set.
The response time t(off), the idle time t(K1-2) and the return transfer time t(on) of the
UMC107E-.. can be set and must be adjusted in line with the requirements of the specific
application, the short-circuit calculation and the requirements of IEC 60364-7-710:2002-11,
sections 556.5.2.2, 556.7 and 556.8 and DIN VDE 0100-710 (VDE 0100 Part 710):2002-11, section 710.537.6 (automatic changeover modules).
z The total off time permitted to occur (from the point at which the fault occurs until the arc in
the overcurrent protective device is cleared) must be less than the minimum time delay for the
changeover process of the automatic changeover module. Setting: Response time t(off)
z If several changeover modules are connected in series in a power supply system, it is recom-
mended that they be time-graded. Setting: Response time t(off), idle time t(K1-2) and return
transfer time t(on).
z As part of the response delay (to be custom-set), you must, at the very least, take into account
the periods of time when the circuit experiences short interruptions, and the response times of
the short-circuit protective device connected upstream or downstream. Regardless of this, the
idle time for the changeover process corresponding to the place of installation must be considered to prevent switching overvoltages.
Setting: Response time t(off) and idle time t(K1-2).
For this purpose, please consult the changeover time lapse diagram in the instruction leaflet
for the PRC487 control device and make the settings required according to the description.
You will find a checklist in chapter "9. Manufacturer's certificate, checklist, circuit documentation". This list details the factory settings and the system-specific settings for the MEDICS
module. Please carry out all the work outlined in the list and log each test step.
The checklist contains:
z Visual inspection
z Commissioning, settings, factory settings
z Functional test
Keep this checklist with this manual in a location that is close to the MEDICS
®
module.
5.1.1 Avoiding errors
Communication via the BMS bus can only be guaranteed when there is only one
terminating resistor at the beginning and the end of the BMS bus. Additional terminating resistors can lead to malfunctions and therefore must not be used.
Please also note the information in the "BMS bus" instruction leaflet.
®
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21
Commissioning, settings and testing
5.2 Assigning addresses-examples
Please also note the information in the "BMS bus" instruction leaflet. * The settings for the
alarm addresses marked with an asterisk (*) refer to reciprocal monitoring of MK... alarm indicator and test combinations.
A changeover and monitoring module with two alarm indicator and test combinations:
UMC...
MK...
MK...
Device Parameters Address settings for a changeover module
107TD47
PRC487
First MK...
Bus address 3
Address 4
Address 1
Test address 3
3, 4, 2
*
Second MK...
Alarm address
Address 2
Test address 3
Alarm address
3, 4, 1
*
Two changeover and monitoring modules, with two alarm indicator and test combinations each:
Device Parameters Address settings for the first
changeover module
Address settings for the
second changeover module
107TD47
PRC487
First MK...
Second MK...
22
Bus address 5 7
Address 6 8
Address 1 3
Test address 5 7
Alarm address
5, 6, 2
*
Address 2 4
Test address 5 7
Alarm address
5, 6, 1
*
7, 8, 4
7, 8, 3
*
*
TGH1322en/06.2009
Trouble shooting
6. Trouble shooting
6.1 PRC487 error messages
If a fault occurs, the MEDICS® system messages will enable you to narrow down the possible
causes. Some messages can have several causes. The following possible errors are indicated
by messages in the PRC487 display.
If you cannot trigger a test function on the PRC487, an alarm message may already be pending, or there may be an open circuit at terminal 9-Ub of the PRC487.
PRC message Possible causes
Failure line 1 Power supply failure on line 1. SUE487 failure. Open circuit, ter-
minal 6-GND3. Defective fuse 1-L1, 1-L2.
Failure line 2 Power supply failure on line 2. SUE487 failure. Open circuit, ter-
minal 5-GND3. Defective fuse 2-L1, 2-L2.
Failure distribution
board
Failure K3 Failure of the internal relay K3 (SUD487). Open circuit terminal
K1/2 manual mode Contactor control has been changed to manual mode. Auto-
Short-circuit distribution board
Wire break K1 on Open circuit when controlling K1 via terminals 11/14 of the
Wire break K1 off Open circuit when controlling K1 via terminals 21/24 of the
Wire break K2 on Open-circuit when controlling K2 via terminals 31/34, auxiliary
Wire break K2 off Open circuit when controlling K2 via terminals 41/44 of the
Fault K1 on K1 cannot be activated. K1 is jammed. Open circuit, auxiliary
Fault K1 off K1 cannot be switched off via latching module. K1 is jammed.
Power supply failure downstream of the changeover module.
SUE487 failure. Open circuit terminal 4-GND3
IN3-GND3
matic changeover will no longer be performed!
Short-circuit downstream of changeover module. Following a
failure on line 1 and changeover to line 2, line 2 drops out and
voltage is present on line 1 again.
PRC487, auxiliary contact K2 or resistor R1.
PRC487 for the purpose of shutting down the latching module.
contact K1 or resistor R2.
PRC487 for the purpose of shutting down the latching module.
contact at terminal GND1 or IN1 of PRC487.
Open circuit, auxiliary contact at terminal GND1 or IN1 of
PRC487.
TGH1322en/06.2009
Fault K2 on K2 cannot be activated. K2 is jammed. Open circuit, auxiliary
contact at terminal GND2 or IN2 of PRC487.
Fault K2 off K2 cannot be deactivated via latching module. K2 is jammed.
Open circuit, auxiliary contact at terminal GND2 or IN2 of
PRC487.
Failure K1 K1 on, but no voltage downstream of K1. Open circuit, main
contacts K1 or line upstream or downstream of K1. SUE487 failure.
23
PRC message Possible causes
Failure K2 K2 on, but no voltage downstream of K2. Open circuit, main
contacts K2. SUE487 failure. Open circuit terminal 4-GND3.
RS-485 fault Undefined characters on the BMS bus. There is more than one
master in the network. More than one slave has the same
address. Interface (A,B) polarity is incorrect.
No MASTER There is no master. No alarm indicator and test combination or
operator panel connected. Bus line interrupted.
EEPROM fault Defective EEPROM or impermissible value stored in EEPROM.
CV460 fault Settings made in SETUP OPTION menu, even though no CV460
is connected.
RK474 fault Settings carried out in the SETUP OPTION menu, although no
RK474 was connected.
Trouble shooting
You can find additional information on messages in the instruction leaflets for the "PRC487
®
control device" and "107TD47 A-ISOMETER
" in chapter "9. Manufacturer's certificate, check-
list, circuit documentation" of this operating manual.
6.2 Fuses F1...F11
If fuses F1 to F11 are tripped, there may be a defect in the changeover module.
These fuses should only be replaced following consultation with Bender.
Caution
Data for fuses F1 to F11
Tripping current......................................................................................................................................... .......4 A, time lag
Breaking capacity ........................................................................................................................................................ 10 kA
ELU type ................................................................................................................................................................... 189140
Dimensions.....................................................................................................................................................6.25 x 32 mm
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TGH1322en/06.2009
Periodic verification and service
7. Periodic verification and service
7.1 Periodic verification
The following periodic verification must be performed on electrical installations in compliance with the local or national regulations that apply. We recommend for your Bender products:
Test To be
performed by
Functional test of IT system monitoring
(insulation, load current, transformer temperature and connection monitoring) by pressing the TEST button on the alarm
indicator and test combination or on the alarm indicator and
operator panel.
Functional test of the changeover module*:
Test of the automatic changeover modules.
Please observe the information in chapter "Testing the changeover module"!
Functional test of the IT system monitoring (insulation, load
current, transformer temperature and connection monitoring)
on the insulation monitoring device.
Testing the set values and the changeover periods Skilled person every 12
Testing of the changeover module, the IT system monitoring,
the connection to the SCADA system (Supervisory Control And
Data Acquisition) (if applicable) and the interaction of the components in the system.
This test includes the following services:
- Inspection:
Marking, display elements, mechanical components,
wiring, parameterisation, connection of
third-party equipment, evaluation of fault memory
- Measurement:
Internal/external supply voltages/potentials,
bus voltage, bus protocol, bus scan
- Practice test:
Device function, device communication
- Documentation:
Test results, recommendations for remedial action
Medical
personnel
Skilled person every 6 months
Skilled person every 6 months
Bender Service every 24
Interval
once every
working day
months
months
* This test must only be performed by an electrically skilled person who has been commissioned to do
so in agreement with the person responsible for the medical location.
Before carrying out the tests, please refer to the instructions relating to the functional tests
in the checklist. If no national directives apply, you should perform the tests recommended
by IEC 60364-7-710:2002-11, section 710.62 and DIN VDE 0100-710 (VDE 0100 Part
710):2002-11, section 710.62.
TGH1322en/06.2009
25
Periodic verification and service
7.1.1 Testing the changeover module
Step Response
Disconnect line 1:
1. Disconnect the fuse switch disconnector or
fuse or
2. Remove fuse F1 or
3. Remove the microfuse on the SUE487/SUD487
Reconnect line 1 1. Changeover to line 1 after delay time t(on).
Disconnect line 2 1. Alarm message "Failure line 2"*
Reconnect line 2 1. Alarm message "Failure line 2"* goes out
1. Changeover to line 2
2. Alarm message "Failure line 1"
3. Message on PRC487: "K1off, K2on"
2. Alarm message "Failure line 1"* goes out
3. Message on PRC487: "K1on, K2off"
Exception:
If an automatic switching back interlocking function is active, the changeover module remains on
line 2 and displays the message "interlocking". To
clear the switching back interlocking function,
interrupt the connection between contacts X3:40
and X3:57.
2. Message on PRC487: "K1on, K2off"
2. Message on PRC487: "K1on, K2off"
TEST on PRC487:
Press the TEST button, RESET button and MENU
button in sequence
To return to the standard display,
press the MENU button
1. Changeover to line 2.
Display: "** TEST **"
2. Changeover to line 1 after t(on).
3. Display of changeover period "t 1->2:
xxxxms" **
Message on PRC487: "K1on, K2off"
* Or corresponding parameterised text. Alarm messages are also transferred via bus or
alarm contacts to TMs, MKs or the building services control system. Test, if necessary.
** Up to a maximum of 15 s; above this no indication possible.
7.2 Service
Bender would be delighted to provide on-site service for commissioning and periodic verification. Please contact our Service Department for more information:
Service-Hotline:
0700-BenderHelp (Telephone and Fax)
Carl-Benz-Straße 10 • 35305 Grünberg • Germany
Tel: +49 6401 807-760 • Fax: +49 6401 807-629
E-Mail: info@bender-service.com • www.bender-de.com
7.3 Maintenance
The MEDICS® module does not contain any parts that require maintenance. Despite this, the
intervals specified for periodic verification should be adhered to.
26
TGH1322en/06.2009
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