Janitza UMG 801 Current Measuring Module Instruction Manual
- June 11, 2024
- janitza
Table of Contents
Doc no. 2.053.007.2.c Status: 03/2023 Item no. 33.03.378
Current measuring module for the UMG 801
Installation instructions
- Module 800-CT8-A – current measuring module 5 A
User manual:
Janitza electronics GmbH
Vor dem Polstück 6
35633 Lahnau, Germany
Support tel. +49 6441 9642-22
E-mail: info@janitza.com
www.janitza.com
1 General information
Disclaimer
Observing the usage information for the devices is a prerequisite for safe
operation and for achieving the specified performance characteristics and
product features. Janitza electronics GmbH assumes no liability for personal
injuries, property damage and financial losses resulting from the failure to
observe the usage information. Make sure that your usage information is
legible and accessible.
Further usage information, such as e.g. the installation instructions or user manual for the base unit, can be found on our web site www.janitza.com under Support > Downloads.
Copyright notice
© 2019 – Janitza electronics GmbH – Lahnau. All rights reserved. Any
duplication, processing, distribution and any other kind of use, even in part,
is prohibited.
Subject to technical changes.
- Make sure that the installation instructions match your device.
- Make sure you have first read and understood the usage information accompanying the product.
- Keep the usage information accompanying the product accessible through its service life and hand it over to the subsequent owner where applicable.
- Please refer to www.janitza.de for information concerning device revisions and the associated adjustments to the usage information accompanying the product.
Disposal
Please observe the national regulations. Dispose of individual parts, where
necessary, depending on the properties and existing country-specific
regulations, e.g. as:
- Electronic waste
- Batteries and accumulators
- Plastic
- Metals
or commission a certified disposal company with the scrapping.
Relevant laws,
applied standards and directives
Please refer to the Declaration of Conformity on our web site
(www.janitza.com) for the laws, standards and
directives applied by Janitza electronics GmbH for the device.
2 Safety
Safety instructions
The installation instructions do not include a complete list of all safety
measures necessary for operating the device.
Special operating conditions may require additional measures. The installation
instructions contain notes that must be observed for your personal safety and
to prevent property damage.
Symbols used on the device:
| The additional symbol on the device itself indicates an electrical danger
that can result in serious injuries or death.
---|---
| The general warning symbol calls attention to possible risks of injury.
Observe all the instructions listed under this symbol in order to prevent
injuries or even death.
Safety instructions in the installation instructions are highlighted with a warning triangle and are presented as follows depending on the level of risk:
DANGER
Warns of an imminent danger that will result in serious or fatal injuries in the event of noncompliance.
WARNING
Warns of a potentially dangerous situation that can result in serious injuries or death in the event of noncompliance.
CAUTION
Warns of an imminently dangerous situation that can result in minor or moderate injuries in the event of noncompliance.
ATTENTION
Warns of an imminently dangerous situation that can result in property damage or environmental damage in the event of noncompliance.
INFORMATION
Points out procedures in which there are no dangers of personal injuries or
property damage.
Safety measures
When operating electrical devices, specific parts of these devices and their
components inevitably carry dangerous voltage. As a result, serious personal
injuries or property damage can occur if they are not handled correctly:
- Before connection, ground the device and its components at the ground wire connection, if available.
- Dangerous voltages may be present in all circuit parts connected to the voltage supply.
- There may still be dangerous voltages present in the device or the components even after disconnection of the supply voltage (capacitor storage).
- Do not operate equipment with open current transformer circuits.
- Do not exceed the threshold values specified in the user manual and on the rating plate. This must also be observed during inspections and commissioning.
- Observe the safety instructions and warning notices in the usage information that accompanies the devices and their components!
WARNING
Danger due to noncompliance with warning and safety instructions.
Noncompliance with warning and safety instructions on the device itself and in
the information on using the device and its components can lead to injury or
even death. Observe safety instructions and warning notices on the device
itself and in the usage information associated with the devices and their
components, such as:
- Installation instructions.
- User manual.
- Safety instructions supplement.
Qualified personnel
To prevent personal injuries and property damage, only qualified personnel
with electrical engineering training may work on the base unit and its
components. They must also have knowledge
- of the national accident prevention regulations.
- of safety technology standards.
- in the installation, commissioning and operation of the device and the components.
WARNING
Risk of injury due to electric voltage or electrical current!
When handling electrical currents or voltages, serious personal injuries or
death can occur due to:
-
Touching live exposed or stripped cores.
-
Device inputs that are dangerous to touch.
Before starting work on your system: -
Disconnect it from the power supply!
-
Secure it against being switched back on!
-
Verify disconnection from power!
-
Ground and short circuit!
-
Cover or block off neighboring parts that are under voltage!
Intended use
The modules/components
- are intended for industrial control usage only.
- are intended as expansion or transfer modules for the UMG 801 base unit in switch cabinets and small distribution boards. (Please observe the usage information associated with the base unit).
- may only be mounted to base units that are disconnected from the power supply (see “Assembly” step).
- are not intended for installation in vehicles! Use of the base unit with modules in stationary equipment is considered an unusual environmental condition and is only permissible by special agreement.
- are not intended for installation in areas exposed to harmful oils, acids, gases, vapors, dust and radiation, etc.
Incoming goods inspection
The prerequisites for trouble-free and safe operation of the devices and their
components include proper transport, storage, setup and assembly, as well as
careful operation and maintenance.
Exercise caution when unpacking and packing the device, without using force
and only using suitable tools.
Check:
- Devices and components by performing a visual inspection to ensure a flawless mechanical condition.
- The scope of delivery (see user manual) for completeness before beginning the installation of your devices and components.
If you assume that safe operation is no longer possible, shut down your device with the components immediately and secure it from being unintentionally started back up again.
It can be assumed that safe operation is impossible if, for example, the device with components:
- Has visible damage.
- No longer functions despite an intact power supply.
- Was subjected to extended periods of unfavorable conditions (e.g. storage outside of the permissible climate thresholds without adjustment to the room climate, condensation, etc.) or transport stress (e.g. falling from an elevated position, even without visible external damage, etc.).
3 Device short description and assembly – current measuring module
The current measuring module
- enhances the scope of functions of the base unit with additional current measuring channels (2 blocks á 4 current measuring channels).
- is suitable for current transformers with transformer ratios of ../1 A or ../5 A.
Fig.: Module 800-CT8-A
The base unit (UMG 801)
- with current measuring module measures current exclusively via a current transformer. The current transformers require basic insulation according to IEC 61010-1:2010 for the rated voltage of the circuit.
- permits assembly of up to 10 modules.
INFORMATION
- The scope of delivery of the module includes the appropriate bus connector (JanBus interface) for connection to the base unit or additional modules!
- In addition to the current measuring module, also observe the usage information for your base unit!
CAUTION
Non-observance of the assembly instructions may result in property damage
or cause personal injury!
Noncompliance with the assembly instructions may cause damage to your base
unit with modules or destroy it and may also result in personal injury.
-
Observe the assembly instructions of your base unit.
-
Before assembly of the modules:
– Disconnect the system from the power supply! Secure it against being switched back on! Verify disconnection from power! Ground and short circuit! Cover or block off neighboring parts that are under voltage! -
Ensure sufficient air circulation in your installation environment and, where applicable, sufficient cooling.
-
Return defective modules to the manufacturer.
Taking into consideration the assembly instructions for your base unit (check bus connection assembly, among other things!), assemble the modules when the system is disconnected from the power supply as follows:
- If not already done, insert the bus connector (JanBus interface) included in the respective scope of delivery in the socket on the bottom of your module.
- Press your module with bus connector onto the DIN rail until the bottom latches engages.
- Slide the contacts of your module bus connector into the sockets of the base unit bus connector (or in the sockets of the connected module) so that the bus connectors (devices) are linked.
Then wire your module and apply voltage to the base unit (system). The base unit recognizes the module automatically.
Fig. “Base unit with module” assembly on DIN rail.
- End angle
- UMG 801 (base unit)
- Module 800-CT8-A
- Bottom latch
- Bus connector Module 800-CT8-A
- DIN rail
Figure Assembly example: UMG 801 (base unit) with module 800-CT8-A
- DIN rail
- End angle
- Bus connector contacts
- Bottom latch
- JanBus interface
- JanBus interface for additional modules
- Bus connector sockets
ATTENTION
Improper handling may cause damage to the module and result in property
damage!
The contacts of the bus connector (JanBus interface) can bend or break and
destroy the bus connector!
- Never touch or manipulate the contacts of the bus connector.
- Never use force to press the module with bus connector contacts into the bus connector sockets!
- When handling, transporting and storing the module, protect the contacts of the bus connector.
ATTENTION
During the start-up process, the base unit does not recognize the module!
If there is no communication to the module, the module functions are not
supported (current measurements).
- Disconnect your system from the power supply and check the condition of the bus connector and the connection of the module to the base unit (JanBus interface). If necessary, slide the contacts of the module bus connector into the sockets of the base unit bus connector (or the connected module) so that the bus connectors (devices) are linked.
- If necessary, restart the base unit.
- If the specified measures are unsuccessful, please contact our support team – www.janitza.com
4 “Current measurement” with terminal assignment connection variant
Fig. Module 800-CT8-A connection variant
5 Current measurement
The module 800-CT8-A
- measures current exclusively via a current transformer.
- permits connection of current transformers with secondary currents of ../1 and ../5 A for current measurement inputs I1 to I8
- has a current transformer ratio of 5/5 A as the standard setting (I1 to I8).
- does not measure DC currents.
WARNING
Electrical currents and voltages!
Open current transformers that are operated on the secondary side (high
voltage spikes) can result in serious personal injuries or even death.
Avoid the open operation of the current transformers and short-circuit
unloaded transformers.
WARNING
Risk of injury due to high currents and high electrical voltages!
Serious personal injuries or death can occur due to:
- Touching live exposed or stripped cores.
- Inputs of the devices, components and modules that are dangerous to touch.
Therefore, please observe the following for your system:
- Before starting work, disconnect it from the power supply!
- Secure it against being switched back on!
- Verify disconnection from power!
- Ground and short circuit! Use the ground connection points with the ground symbol for grounding!
- Cover or block off neighboring parts that are under voltage!
INFORMATION
Recommendation:
The current transformer ratios are configured self-explanatorily in the
“device configuration” function of the GridVis® software.
6 Dismantling
Dismantling the module:
-
Disconnect the system from the power supply! Secure it against being switched back on! Verify disconnection from power! Ground and short circuit! Cover or block off neighboring parts that are under voltage!
-
Disconnect the wiring of your module.
-
Decouple the bus connector (JanBus interface) of your module from the base unit and/or the connected modules by pulling out your module.
-
Unlatch all bottom latches of your module.
Recommendation: Use a screwdriver for this (carefully!). -
Remove the DIN rail from your module without touching or damaging the bus connector contacts.
-
Bottom latch
-
Bus connector sockets
-
Bus connector contacts
-
DIN rail
-
JanBus interface
-
JanBus interface for additional modules
-
Screwdriver for unlatching
ATTENTION
Handling your module too roughly may cause damage to the module and result
in property damage!
The bus connector contacts and the bottom latches can be damaged or broken off
during dismantling of your module.
- Never wrench the module from the DIN rail using force.
- Decouple the bus connector (JanBus interface) before hand and carefully unlatch the bottom latch of the module using a screwdriver!
ATTENTION
Property damage due to dismantling or decoupling the module during
operation!
Dismantling or decoupling the module while it is communicating with the base
unit can lead to damage to your devices!
- Disconnect your system from the power supply before dismantling or decoupling the module! Secure it against being turned back on! Verify disconnection from power! Ground and short circuit! Cover or block off neighboring parts that are under voltage!
7 Technical data
General information
Net weight (with plug terminals)| Approx. 220 g (0.49 lb)
Device dimensions| approx. w = 73 mm (2.87 in),
h = 90 mm (3.54 in),
d = 76 mm (2.99 in)
Installation position| discretionary
Mounting/assembly – suitable DIN rails – 35 mm (1.38 in )| • TS 35/7.5
according to EN 60715
• TS 35/10
• TS 35/15 x 1.5
Protection class| IP20
Operating temperature| – 10 °C (14 °F).. +55 °C (131 °F)
Impact resistance| IK07 according to IEC 62262
Transport and storage
The following information applies to devices which are transported and
stored in the original packaging
Free fall | 1 m (39.37 in)
Temperature| K55
-25 °C (-13 °F) up to +70 °C (158 °F)
Relative humidity| 5 to 95% at 25 °C (77 °F) without condensation
Ambient conditions during operation, see base unit
Interface and energy supply
JanBus (proprietary)| Via bus connector
Current measurement module 800-CT8-A
Rated current| 5 A
Channels| 8 (2×4)
• 2 systems (L1, L2, L3, N)
• Individual channels
Metering range| 0 .. 6 Arms
Crest factor | 2 (based on 6 Arms)
Overload for 1 s | 120 A (sinusoidal)
Resolution | 0.1 mA (color graphic display 0.01A)
Overvoltage category | 300 V CATII
Rated surge voltage | 2,5 kV
Power consumption approx. | 0.2 VA (Ri = 5 mΩ)
Sampling frequency | 8.3 kHz
Frequency of the power frequency| 40 Hz .. 70 Hz
Harmonics | 1 .. 9. (only odd)
Terminal connection capacity – Module 800-CT8-A
Connectable conductors.
Only one conductor can be connected per terminal.
Single core, multi-core, fine-stranded| 0.2 – 2.5 mm² , AWG 26-12
Cable end sleeve (not insulated)
• recommended stripping length| 0.2 – 2.5 mm² , AWG 26-12
• 10 mm (0.3937 in)
Cable end sleeve (insulated) *
• recommended stripping length | 0.2 – 2.5 mm² , AWG 26-12
• 12 mm (≤1,5 mm² ), 10 mm (>1.5 mm² ) / 0.47 in (≤1.5 mm² ), 0.39 in (>1.5
mm² )
Cable end sleeve
Length of the contact sleeve | 8 – 12 mm (0.31 – 0.47 in)
Tightening torque screw flange| 0.2 Nm (1.77 lbf in)
- … Applies to wire end sleeves with a maximum outer diameter of the plastic collar up to 4.5 mm (0.18 in).
** .. Depending on the type of cable end sleeves used (cable end sleeve manufacturer).
INFORMATION
- Detailed technical data for the module can be found in the user manual.
- Technical data for the basic device and information on the procedure in the event of errors can be found in the usage information for your basic device.
LEDs Module 800-CT8-A
1.| Tx (Transmit data)| Flashes „orange“ during operation and signals
cyclic data exchange.
2.| Rx (Receive data)
3.| P (Power – Power supply)| Lights up „green“ when the power supply via
the JanBus interface is correct.
4.| E (Error – Initialization and error case) | Lights up “red“ during
initialization/ startup of the device and in the event of an error.
INFORMATION
Our usage information uses the grammatical masculine form in a gender-neutral
sense! This form always refers equally to women, men and diverse. In order to
make the texts more readable, distinctions are not made. We ask for your
understanding for these simplifications..
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