GSM OUT MiniModul User manual

CSM –
Measurement
Technology.
OUT MiniModul
User Manual
Version 1.02
CSM GmbH
Raiffeisenstr. 34
70794 Filderstadt
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.csm.de Copyright ©
2010 CSM GmbH

User Manual OUT MiniModul
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Copyright © 2010 CSM GmbH
Revision History
Date Version Editor Comments
2010-02-23 1.00 CSM/EK OUT MiniModul
2010-03-18 1.01 CSM/FT 9.2.1 “15 V output voltage” section updated, 9.7 “Environmental
Conditions” section updated
2010-03-25 1.02 CSM/tw Minor corrections

User Manual OUT MiniModul
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Copyright © 2010 CSM GmbH
Contents
1Introduction..................................................................................................................................4
2Important Information...................................................................................................................5
2.1 Symbols.................................................................................................................................5
2.2 General Information................................................................................................................5
2.3 Liability...................................................................................................................................5
2.4 CAN Warning .........................................................................................................................6
2.5 Handling / Mounting Precautions............................................................................................6
2.6 Mounting place.......................................................................................................................6
2.7 Safety ....................................................................................................................................7
2.8 Maintenance & Readjustment.................................................................................................7
2.9 Disposal of old product...........................................................................................................7
2.10 Updates & Contact .............................................................................................................8
3Handling ......................................................................................................................................9
3.1 Mounting................................................................................................................................9
3.2 Cleaning.................................................................................................................................9
3.3 Accessories............................................................................................................................9
4Connectors ................................................................................................................................10
4.1 Signal Outputs......................................................................................................................10
4.2 CAN / Power Supply.............................................................................................................11
5Cables .......................................................................................................................................12
5.1 Connection between two devices..........................................................................................12
5.1.1 MiniModul Connection Cable (K70-xxxx)......................................................................12
5.1.2 MiniModul Cable Coupler (K71)....................................................................................13
5.1.3 MiniModul Connection Cable with Power Supply (K72-xxxx).........................................13
5.2 Connection to CAN systems.................................................................................................14
5.2.1 MiniModul Interface Cable CiA with Power Supply (K73-xxxx)......................................14
5.2.2 MiniModul connection to other systems........................................................................14
5.3 CAN Termination Plug (K74) ................................................................................................15
5.4 Sensor cables ......................................................................................................................15
5.4.1 OUT MiniModul Sensor Cable L1B 2-pol. / open (K124-xxxx).......................................15
6Installation .................................................................................................................................16
6.1 Hints for power supply ..........................................................................................................16
6.2 Simple chain ........................................................................................................................17
6.3 Long chain with additional power supply...............................................................................18
6.4 Using the OUT MiniModul.....................................................................................................19
6.4.1 Applications with different output configurations ...........................................................19
7Configuration .............................................................................................................................21
7.1 OUT MiniModul ....................................................................................................................21
7.2 OUT MiniModul CANopen ....................................................................................................21
8Indicator LEDs ...........................................................................................................................22
8.1 OUT MiniModul ....................................................................................................................22
8.1.1 "Power" / "Error" LED...................................................................................................22
8.1.2 Channel Indicator LEDs ...............................................................................................22
8.2 OUT MiniModul CANopen ....................................................................................................23
8.2.1 "Power" / "Error" LED...................................................................................................23
8.2.2 Channel Indicator LEDs ...............................................................................................23
9Technical Data...........................................................................................................................24
9.1 Power Supply.......................................................................................................................24
9.2 Outputs ................................................................................................................................24
9.2.1 15 V output voltage......................................................................................................25
9.3 Power Consumption.............................................................................................................26
9.4 Configuration........................................................................................................................26
9.5 Dimensions ..........................................................................................................................27
9.6 Mounting..............................................................................................................................27
9.7 Environmental Conditions.....................................................................................................27
10 Troubleshooting ...................................................................................................................28

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Copyright © 2010 CSM GmbH
1INT ODUCTION
CSM OUT MiniModul is a compact output module for analog voltage, current, frequency/PWM and
digital voltage.
Features
►Eight individually configurable output channels
►Analog voltage output (0 V to 10 V)
►Current output (0 mA to 20 mA / 4 mA to 20 mA)
►Frequency output (0 Hz - 100 Hz / 0 Hz - 1 kHz / 0 Hz - 10 kHz / 0 Hz - 100 kHz)
►PWM-/ duty cycle output (0 % - 100 %)
►Digital Output (Low = 0V / High adjustable 5 V, 8 V, 10 V, 12 V, 15 V)
►Output channels are controlled by configurable CAN bus messages
►Output refresh rate 1000 Hz per channel
►High-speed CAN interface (default 500 kBits/s, up to 1 MBits/s)
►Configuration of all CAN parameter (Standard/Extended CAN, sample point, identifier)
►CAN system connectors for easy installation of CAN bus and supply
►Power supply range ca. +6.5 V …+60 V, ideal for all automotive power supply levels
12 / 24 / 42 V
►Power consumption up to 8 W (depending on configuration and load)
►500 V isolation voltage between channel, CAN interface and power supply
►Rugged and compact housing
►Compatible to CSM MiniModul devices
►Compatible to CSM AD/Thermo/Dual-Scan CAN devices
►Compatible to CSM UniCAN data logger/recorder
Operation environment - AUTOMOTIVE version
►Operation temperature: -40 °C to +110 °C
►Device protection class: IP67
►For operation in the engine compartment
Operation environment - INDUSTRIAL version
►Operation temperature: -40 °C to +85 °C
►Device protection class: IP50
►For indoor operation in vehicles, test benches and industrial installations
CONFIGURATION
►Comfortable configuration via CAN
►Easy-to-use Windows application, featuring auto-detection and auto-configuration with
CANdb compatible signal data base for all connected devices
or
CANopen Master according to CiA DS301, DS305 and DS404

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Copyright © 2010 CSM GmbH
2IMPO TANT INFO MATION
2.1 Symbols

IMPORTANT INFORMATION
Understand all the information given near this sign in order to benefit from all advan-
tages of the system.
CAUTION, WARNING
Observe all instructions given at this sign to avoid injury, danger or damages.
2.2 General Information
►We reserve the right to make technical alterations to the hardware, software, and documents
at any time without prior notification.
►All trademarks mentioned in the documentation are properties of their respective owners.
2.3 Liability
►This document has been carefully checked for accuracy. We reserve the right to make techni-
cal alterations to the hardware, software, and documents at any time without prior notification.
►CSM GmbH does not assume liability for damages of any kind that are caused directly or indi-
rectly by the use of devices or accompanying software, or by errors or omissions in the
documentation.
►Hardware, software and documentation are provided in an "as is" condition and without any
guarantees regarding their function in the end-customer's systems.

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Copyright © 2010 CSM GmbH
2.4 CAN Warning

It is recommended to connect OUT MiniModul to a separate CAN bus (measurement
bus, "Messbus") to ensure optimum operation. Furthermore this minimizes the risk of
disturbing an existing CAN bus system.
Be careful when connecting third-party devices to a measurement bus with
OUT MiniModul. Make sure to use compatible configuration settings for all devices
(same CAN bit rate, different CAN identifiers etc.)
Connecting an OUT MiniModul device to an existing CAN bus system (e.g. vehicle or
automation system) may affect the behavior of the CAN bus. This may lead to severe
personal injury or material damage. The usage of OUT MiniModul devices is al-
lowed only for individuals understanding the functionality and handling.
To avoid any risks, observe the following guidelines:
►Read and understand this manual.
If you have any questions, contact CSM immediately
[e-mail]
►Use proper configurations (especially CAN parameters).
►When connecting to your CAN bus system, observe all relevant security precautions.
CSM GmbH assumes NO LIABILITY for errors, damage or injury caused by any use or unauthorized,
improper or incorrect handling of OUT MiniModul devices.
2.5 Handling / Mounting Precautions
Automotive versions of OUT MiniModul are equipped with a GORE

membrane which is essential to
enable regulation of pressure and humidity. This is required to cope with the rapidly changing envi-
ronmental temperatures in cars.
This is a suitable and commonly used method.
But it requires that the small vent in the module case is open and freely. If this is not obeyed,
condensation may dam up in the case and lead to persistent damage of the module.
Do not cover this hole. Free air circu-
lation required!
Do not insert objects into the hole,
this would destroy the membrane.
Do not unscrew any screws on the
front side. This could affect IP6x-
protection of the device.
2.6 Mounting place
Our devices are constructed for permanent usage and mounting in vehicles. Be sure that the devices
are safely mounted e.g. in the engine compartment to avoid damages.

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2.7 Safety
OUT MiniModul has been designed to conform to the relevant safety standards.
Do not open OUT MiniModul. No serviceable parts inside.
Do not make any mechanical or electrical changes.
Don't even loosen the screws on the front side.
IP6x protection (AUTOMOTIVE version) may be destroyed by unauthorized ma-
nipulation of the device.
Before connecting any cable make sure that the applied signals are within the
allowed range (see chapter 9 Technical Data).
Make sure that OUT MiniModul is installed correctly. Operation of
OUT MiniModul only within the specified environment (see chapter 9 Technical
Data). Use the adequate version of OUT MiniModul (AUTOMOTIVE or INDUS-
TRIAL)
2.8 Maintenance & Readjustment
OUT MiniModul was adjusted in accordance with applicable CSM GmbH adjustment procedures dur-
ing the manufacturing process. These procedures are ISO-9001 controlled and are designed to assure
that OUT MiniModul will meet its published specification.


CSM recommends a readjustment cycle of one year.
Depending on the operation environment and the type of plugs, the connector contacts may be subject
to accelerated wear-out. The CSM Maintenance Package (see below) optionally includes exchange of
all device connectors
CSM offers a Maintenance Package for OUT MiniModul, which includes readjustment and other
benefits. For more information contact CSM directly (see chapter 2.10 Updates & Contact).
2.9 Disposal of old product
CSM products are designed and manufactured with high quality materials and
components, which can be recycled and reused.
When this crossed-out wheeled bin symbol is attached to a product it means the prod-
uct is covered by the European Directive 2002/96/EC. Please inform yourself about
the local separate collection system for electrical and electronic products. Please act
according to your local rules and do not dispose of your old products with normal
household waste. The correct disposal of your old product will help prevent potential
negative consequences for the environment and human health.

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Copyright © 2010 CSM GmbH
2.10 Updates & Contact
►CSM supports its products during the whole lifecycle. Updates for all components (e.g. docu-
ments, configuration software, device firmware) will be provided when available.
►It is recommended to regularly visit the DOWNLOAD page in the Support area on our web
site to stay up-to-date.
CSM GmbH
Raiffeisenstr. 34
70794 Filderstadt
Germany
Phone: [phone]
Fax: [phone]
E-Mail: su[email protected]
Homepage: www.csm.de

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Copyright © 2010 CSM GmbH
3HANDLING
3.1 Mounting
Due to its rugged and compact design, OUT MiniModul can be mounted nearly everywhere. However
there are some limitations to ensure optimal performance and product life.
Do not exceed the environmental limits (temperature, humidity, vibration, ...)
Use the existing screw-in holes on the rear side of the device.
Don't forget to apply a suitable thread locker if necessary (e.g. Loctite®)
Do not drill any additional holes into the housing!
Contact CSM (see chapter 2.10) for information about mounting kits for OUT MiniModul.
In addition to the screw-in holes, the OUT MiniModul provides four oblong holes (two on each side).
Fastener straps (e.g. a cable tie) can be inserted through these holes for easy fixing the device.
Do not drop the device! After a drop, especially on an edge, the sealing
may be harmed! Return the device to CSM for a check.
3.2 Cleaning
Remove all cable connections of OUT MiniModul before cleaning.
Use a dry or slightly moistened cloth. If some dirt remains, you may add some mild detergent.
Never use strong solvents or abrasive agents!
No liquids are allowed to flow into the device or its connectors!
3.3 Accessories
Always use CSM certified parts like cables, mounting kits etc.
CSM certified parts have been designed and validated carefully in order to provide maximum benefits
to the user. Refer to chapter 5 Cables for a list of available cables. If you need a special cable to con-
nect a third-party device to the CAN bus, please contact CSM.

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Copyright © 2010 CSM GmbH
1
2
4CONNECTO S
All connectors are placed on the front side of OUT MiniModul
►8 connectors for signal output (on the left, "1" to "8")
►2 connectors for CAN and power supply (on the right)
Refer to chapter 8 Introduction for information about the "Power / Error" LED (green/red) and the
channel indicator LEDs.
4.1 Signal Outputs
OUT MiniModul provides 8 output channels. The channels are fully isolated among each other as well
as towards the CAN interface and the power supply.
The corresponding plug is a LEMO type FGA.1B.302.CLAxxxxx
Pin allocation: (View on module front)
PIN Signal Description
1 Vout+ output signal, plus
2 Vout- output signal, ground
Chassis Shield cable shield

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Copyright © 2010 CSM GmbH
2
3
4
5
1
4.2 CAN / Power Supply
OUT MiniModul uses a combined connector for power supply and CAN. There are two connectors for
outgoing and incoming cables. This allows easy wiring with only one thin cable between several
OUT MiniModul devices. At the end of such a chain, a CAN termination resistor is plugged into the
"CAN" connector.
A variety of cables for power supply connection, attaching a CAN data logger and daisy-chaining be-
tween devices are available with different cable lengths. Refer to chapter 5 Cables for more informa-
tion.
The corresponding plug is a LEMO type FGG.0B.305.CLAxxxxx
Pin allocation: (View on module front)
PIN Signal Description
1 Power + power supply, plus
2 Power GND power supply, ground
3 CAN_H CAN high
4 CAN_L CAN low
5 CAN_GND CAN ground
Chassis Shield cable shield


Use genuine CSM cables for CAN connection only (see chapter 5).
The CAN connectors have identical pin-out. The signals (CAN bus, supply)
are directly connected between the two connectors.

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Copyright © 2010 CSM GmbH
5CABLES
CSM offers a complete variety of optimized OUT MiniModul cables.
Benefits of genuine CSM MiniModul cables:
►low-drop power-supply lines
►shielded twisted-pair CAN lines
►temperature resistant up to +150 °C 1
►100 % tested after production
It is highly recommended to use genuine CSM cables only.
5.1 Connection between two devices
5.1.1 MiniModul Connection Cable (K70-xxxx)
K 7 0 - x x x x
(male) (male)
Usage: connection (power, CAN) between MiniModul devices in a daisy-chain
Length: various cable lengths are available (13 cm, 25 cm, 50 cm, 1 m, 2 m, 3 m, 5 m, 10 m)
Connection: from "CAN" of one device to "CAN " of another device
see chapter 5.1.2 MiniModul Cable Coupler (K71) for coupling two connection cables
Article No. Description
ART0201053 MiniModul K70-0013, Connection Cable 13 cm
ART0201070 MiniModul K70-0025, Connection Cable 25 cm
ART0201054 MiniModul K70-0050, Connection Cable 50 cm
ART0201055 MiniModul K70-0100, Connection Cable 1 m
ART0201056 MiniModul K70-0200, Connection Cable 2 m
ART0201052 MiniModul K70-0300, Connection Cable 3 m
ART0201057 MiniModul K70-0500, Connection Cable 5 m
ART0201058 MiniModul K70-1000, Connection Cable 10 m
1CiA connector (DSUB9) of K73-xxxx: up to 85 °C

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Copyright © 2010 CSM GmbH
5.1.2 MiniModul Cable Coupler (K71)
K 7 1
(female) (female)
Usage: coupling of two Connections Cables for increased cable length
Connection: between MiniModul Connection Cable (K70-xxxx), see chapter 5.1.1
Article No. Description
ART0201059 MiniModul K71, Cable Coupler
5.1.3 MiniModul Connection Cable with Power Supply (K72-xxxx)
150 cm 100 cm
300 cm
K 7 2
-
x x xx
(male)
(male)
CAN & POWER
CAN only
Usage: power supply connection all devices connected to daisy-chain
plus connection (power, CAN) between two MiniModul devices in the daisy-chain
Length: power supply cable 3.0 m
device connection cable 2.5 m
Connection: red banana plug for positive supply voltage (PLUS)
black banana plug for negative supply voltage (MINUS).
Refer to chapter 9.1 Power Supply for information about the allowed voltage range!
LEMO connectors from "CAN" of one device to "CAN" of another device
The supply is connected to the left LEMO connector only (CAN & POWER, marked
the label). The right LEMO connector carries CAN signals only.
CAUTION: Make sure to connect only ONE CONNECTOR WITH POWER SUPPLY
to a device.
Article No. Description
ART0201060 MiniModul K72-0250, Connection Cable & Supply

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5.2 Connection to CAN systems
5.2.1 MiniModul Interface Cable CiA with Power Supply (K73-xxxx)
150/200/400
cm
100 cm
100 cm
K 7 3
-
x x xx
Usage: power supply connection for first OUT MiniModul of a device daisy-chain
connection of CAN bus to a CAN acquisition system with CiA connector
Length: power supply cable 1.0 m device connection cable 2.5 m (K73-0250),
3.0 m (K73-0300) or 5.0 m (K73-0500)
Connection: red banana plug for positive supply voltage (PLUS)
black banana plug for negative supply voltage (MINUS).
Refer to chapter 9.1 Power Supply for information about the allowed voltage range!
LEMO connector to "CAN" of first MiniModul device in daisy-chain
DSUB connector with CiA pinout (Pin 2: CAN_L, Pin 3: CAN_GND, Pin 7: CAN_H,
Pin 5 and chassis: SHIELD)
Article No. Description
ART0201051 MiniModul K73-0250, Interface Cable CAN & Supply
ART0201074 MiniModul K73-0300, Interface Cable CAN & Supply
ART0201071 MiniModul K73-0500, Interface Cable CAN & Supply
5.2.2 MiniModul connection to other systems
Cables for connections to other systems (e.g. IPETRONIK or ETAS) are available upon request. Refer
to chapter 2.10 Updates & Contact for information.
Article No. Description
ART0201061 MiniModul K75-0250, Connection Cable IPT1B & Supply
ART0201062 MiniModul K76-0150, Connection Cable IPT1B
ART0201063 MiniModul K77-0250, Interface Cable ES690 & Supply
ART0201072 MiniModul K77-0500, Interface Cable ES690 & Supply

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5.3 CAN Termination Plug (K74)
Usage: CAN bus termination at the end of a daisy-chain
Connection: plug into "CAN" of the last MiniModul device in the daisy-chain
5.4 Sensor cables
5.4.1 OUT MiniModul Sensor Cable L1B 2-pol. / open (K124-xxxx)
K 1 2 4
-
x x x x
(male)
(open)
Usage: sensor connection for one OUT MiniModul output channel
Length: various cable lengths are available (20 cm, 40 cm, 50 cm, 1 m)
Connection: LEMO plug from device channel connector.
White open end for positive output signal (Vout+).
Brown open end for negative output signal (Vout-).
Article No. Description
ART0201187 MiniModul K124-0200, OUTMM Sensor Cable L1B 2-pol. / open 20 cm
ART0201190 MiniModul K124-0400, OUTMM Sensor Cable L1B 2-pol. / open 40 cm
ART0201188 MiniModul K124-0500, OUTMM Sensor Cable L1B 2-pol. / open 50 cm
ART0201189 MiniModul K124-1000, OUTMM Sensor Cable L1B 2-pol. / open 1 m
Article No. Description
ART0201050 MiniModul K74, CAN Termination Plug

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6INSTALLATION
6.1 Hints for power supply
CSM OUT MiniModul is realized using a low-power design. In addition with the genuine CSM
cable (very low voltage-drop on the power lines) and the miniaturized geometry of the devices,
a simple and straight-forward installation is possible in most cases.
When choosing the power supply strategy, the following parameters are relevant:
►minimum power supply voltage
This is the minimal value of the voltage supplied by the power supply. In automotive applica-
tion, this is usually the vehicle's on-board supply system (e.g. "12 V" for passenger cars).
Note that the minimum value is relevant. In a "12 V" system this value can be as low as 5V
(for several milliseconds) during starter operation.
►number of OUT MiniModul devices
Each device needs electrical power to operate (see technical data in chapter 9.1). During
power-up a temporary inrush current is drawn, which may exceed the average operating cur-
rent. The power supply must be able to provide enough current for all connected devices.
►cable length
The resistance of the connection cables cause a voltage drop along the cable, which depends
on the cable length and the current through the cable. The voltage at last device in a supply
chain must be within the specified range (6.5 V or higher, see technical data in chapter 9.1).
For typical applications CSM recommends the following installation:
►supply voltage ≥12 V, total cable length ≤10 m: power consumption of connected
OUT MiniModuls may range up to 15 W
►supply voltage ≥8 V, total cable length ≤10 m: power consumption of connected
OUT MiniModuls may range up to 10 W
(refer to chapter 9.3 Power Consumption)

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6.2 Simple chain
CAN1 2 3 4 5 6 7 8
CAN1 2 3 4 5 6 7 8
CAN1 2 3 4 5 6 7 8
K70
POWER
SUPPLY
K73
K74
CAN ac quisition system
CAN1 2 3 4 5 6 7 8
K70
K70
►The CAN bus and the power supply between the OUT MiniModuls is connected using Con-
nection Cables (K70).
►At the end of the CAN bus, a CAN Termination Plug (K74) is used
►The acquisition system (e.g. computer with CAN card or a CAN data logger) is connected to
the other end of the CAN bus. For systems with CiA connectors, an Interface Cable CAN
with Power Supply (K73) is used. The CAN bus is connected to the acquisition system. The
power cables are connected to a power supply.
►This is the usual installation which is suitable for most environments.
►There is one power supply at the beginning of the device chain. There are some limitations
depending on the number of devices, the cable length and the minimum voltage of the
power supply. Refer to chapter 6.1 Hints for power supply for more information.

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6.3 Long chain with additional power supply
CAN1 2 3 4 5 6 7 8
CAN1 2 3 4 5 6 7 8
CA N1 2 3 4 5 6 7 8
CA N
1 2 3 4 5 6 7 8
CA N1 2 3 4 5 6 7 8
CA N1 2 3 4 5 6 7 8
CAN1 2 3 4 5 6 7 8
CAN
1 2 3 4 5 6 7 8
CAN1 2 3 4 5 6 7 8
CAN1 2 3 4 5 6 7 8
POWER
SUPPLY 1
K73
K72
K70
K70
K70
K70
K70
K74
POWER
SUPPLY 2
K71
K70
K72
POWER
SUPPLY 3
...
...
CAN acquisition system
K70
K70
►This example shows a more complex installation with three clusters, each consisting of sev-
eral OUT MiniModuls.
►All devices are connected to one CAN bus. At the end of the CAN bus, a CAN Termination
Plug (K74) is used.
►Each cluster has its own power supply to minimize voltage drops along the connection cables.
►At the beginning of the chain (next to the CAN acquisition system), the first power supply is
connected using an Interface Cable with Power Supply (K73). In the example, this supply
provides power for the first four devices.

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►Between the first and the second cluster, a Connection Cable with Power Supply (K72) is
installed. This cable directly connects the CAN bus signals between the devices.
The power supply is routed only in forward direction, towards the second cluster. There is no
connection of power lines between the two LEMO plugs of the cable.
The two banana plug cables are connected to the LEMO plug marked with the white label.
CAUTION: Make sure to install cable K72 correctly - the marked LEMO plug must be con-
nected into "CAN" of the first device in the second cluster.
►The example above shows a Cable Coupler (K71) between the second and the third cluster.
This part can be used to connect two Connection Cables (K70 or K72) in order to get a
longer connection between two devices/clusters.
►The last cluster has its own power supply with a Connection Cable with Power Supply
(K72), similar to the second cluster.
Please refer to the previous chapter 6.1 Hints for power supply for more information about choosing a
suitable power supply strategy.
6.4 Using the OUT MiniModul
In general, the above mentioned methods apply also to OUT MiniModul, but due to its configurable
output channels, some special points must be highlighted.
6.4.1 Applications with different output configurations
The OUT MiniModul offers eight individual configurable output channels. That requires special atten-
tion when designing the measure setup.
►Analog voltage
►Current
►Frequency
►PWM-/ duty cycle
►Digital
An OUT MiniModul may require up to 8 W!
Before installing the OUT MiniModul check the power consumption of
the desired configuration in the office or laboratory.
►Depending on the output type and the load of the output channels the power consumption
may range from 1.2 W to 8.0 W (see technical data in chapter 9.3 Power Consumption).
►The maximum rating for the output signal is up to 8 channels at 15 V with a current of up to
20 mA, allowing a total load of 2.4 W.
►Depending on the supply voltage, the OUT MiniModul may require an input current of up to
1A!
It may be necessary to use a separate power supply in this case.

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Copyright © 2010 CSM GmbH
CAN1 2 3 4 5 6 7 8
CAN ac quisition system
K73
IN OUT
IN OUT
IN OUT
IN OUT
K70
POWER
SUPPLY 2
...
CAN1 2 3 4 5 6 7 8
K72
K72
POW
ER
SUPPLY 3
POWER
SUPPLY 1
K70
K70
K74
►A current of 1 A leads to a voltage drop of at least 75 mV/meter (20 °C / 68 °F) over the power
supply cables K70–K73. Each connector adds to the loss. Thus the voltages of power supply
1 and 2 must be appropriate not to fall below the minimum voltage requirements of the
OUT MiniModul. Remember, that the cable resistance increases about 40 %, when the tem-
perature rises from 20 °C (68 °F) to 110 °C (230 °F).