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MANUAL CONTROLADOR GUENTNER GMM GMC
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In order to prevent serious physical injuries or major material damage, work on/with the equipment may only be performed by authorised persons with the appropriate training and qualifications who are familiar with the setup, installation, commissioning and operation of speed controllers. These persons must read the operating instructions carefully before installation and commissioning. In addition to the operating instructions and national regulations on accident prevention, recognised technical rules (safety and professional work under UVV, VBG, VDE etc.) must be followed.
Repairs to the device may only be made by the manufacturer or a repair centre authorised by the manufacturer.
UNAUTHORISED AND IMPROPER INTERVENTIONS WILL INVALIDATE THE WARRANTY!
The speed controllers are located in the plastic housing (protection rating IP54). This protection rating is only guaranteed when the equipment is closed! The UL models are assembled on an open mounting plate.
An open controller creates exposure to hazardous electrical voltages; the protection rating of the open equipment is IP00! The applicable national accident prevention regulations must be followed when working on controllers under voltage.
Ensure that fuses are only replaced with fuses of the specified rating and note that they must not be repaired or bridged. Only a double-pole circuit tester may be used to check that the equipment is disconnected from the power. The equipment is only intended for the purposes agreed in the order confirmation. Any other or additional use is not in accordance with its intended purpose. The manufacturer accepts no liability for any damage arising from unintended use. The intended use also includes compliance with the installation, operating and maintenance procedure described in these operating instructions. The technical data and the details of the terminal assignments can be found on the type plate and the instructions and must be followed.
Electronic equipment is not fundamentally failsafe! The user must therefore ensure that his system reverts to a safe condition in the event of failure of the equipment. The manufacturer accepts no responsibility for any damage to life and limb or to material goods and assets in the event of failure to comply with this provision and in the event of improper use.
The electrical installation must be performed in accordance with the relevant regulations (e.g. cable cross-section, fuses, earth conductor connection etc.). Additional information is included in the documentation. If the controller is used in a particular area of application, the requisite standards and regulations must be followed.
Prior to commissioning of the controller, check whether any residual moisture (condensation) has formed in the housing. If so, the equipment must be dried out. The same applies if the sachet of silica gel (desiccant) has discoloured as this indicates that the sachet of silica gel is no longer providing any protection against moisture. If there are large volumes of condensation (droplets on the interior walls and components), they must be removed manually. Once the equipment has been commissioned for the first time, the power supply and the internal control voltage must no longer be switched off for a long period. If this should nevertheless be necessary for operational reasons, suitable moisture protection must be provided.
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The GMM series controllers are microprocessor control systems in a weather-resistant and impact- proof polycarbonate housing for the management and speed control of EC fans.
The connected fans must be EC fans!
The equipment is controlled by means of menus using a 2-line display and an input keyboard.
The control component operates as a PID controller. The PID controller (proportional-integral- derivative) consists of the P part Kp, the I part and the D part. The controller continuously compares the setpoint signal with the actual value measured and traced back and establishes a correcting variable from the difference between the two values, which influences the control route in such a way as to minimise the control deviation.
The GMM management functions ensure simple commissioning and maintenance of the EC fans and setup of the EC fans on the design point of the heat exchanger. In addition, operating and alarm messages in plain text are shown in the display.
Any changes in models meeting customer-specific requirements and hence deviating from the standard type are described separately and enclosed with these instructions. Always keep both documents together!
1.1 Classification
Güntner Motor Management for EC systems GMM EC/
01 04 08 16 = Number of control outputs for EC fans X
Code only for UL models (on mounting plate) ____ UL
Examples:
GMM EC/01 = Controller and motor management for 1 EC fan GMM EC/04 = Controller and motor management for up to 4 EC fans GMM EC/08 = Controller and motor management for up to 8 EC fans GMM EC/16 = Controller and motor management for up to 16 EC fans
Examples for Version .1 (changed functionality of digital inputs):
GMM EC/01.1 = Controller and motor management for 1 EC fan GMM EC/04.1 = Controller and motor management for up to 4 EC fans GMM EC/08.1 = Controller and motor management for up to 8 EC fans GMM EC/16.1 = Controller and motor management for up to 16 EC fans
UL examples:
GMM EC/01 UL = Controller and motor management for 1 EC fan GMM EC/04 UL = Controller and motor management for up to 4 EC fans GMM EC/08 UL = Controller and motor management for up to 8 EC fans GMM EC/16 UL = Controller and motor management for up to 16 EC fans
Special models are not covered by this device code.
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1.2 Transport and storage, copyright notice
The controllers are packaged appropriately for transport and may only be transported in their original packaging. Avoid any impacts and collisions. Unless otherwise noted on the packaging, the maximum stacking height is 4 packs. When you receive the equipment, check for any damage to the packaging or the controller.
Store the equipment in its original packaging and protected from the weather, and avoid extremes of heat and cold.
Subject to technical changes in the interests of further development. Therefore no claims may be derived from information, images and drawings; errors excepted!
All rights, including rights created by patent grant or other registration, are reserved.
These operating instructions are the copyright of
GÜNTNER AG & Co. KG Fürstenfeldbruck Germany
1.3 Warranty and liability
The current General Terms and Conditions of Güntner AG & Co. KG are applicable. See the web site of Güntner AG & Co. KG.
1.4 Manufacturer and supplier address
If you have any questions, feedback or special requests, please contact
Güntner AG & Co. KG Hans-Güntner-Straße 2- D-82256 Fürstenfeldbruck, Germany Service Telephone Germany: 0800 48368637 0800 GUENTNER Service Telephone Worldwide: +49 8141 242-
Fax: +49 (0)8141/242- [email protected]
http://www.guentner.de
Copyright 2009 Güntner AG & Co. KG
All rights, including rights of photomechanical reproduction and storage in electronic form, are reserved.
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"Manual" mode can be selected to check the functioning of the GMM. To do this, select the "Manual mode" menu option with the ▼ key and then confirm with the ► key. Scroll to the "Manual mode on" menu option using the ▲▼ keys and select the function with the <┘key. A * appears at the end of the first line and indicates that this function is now selected. Now use the ▼ key to navigate to the control value function and select it with the ► key. The control value (0 - 100%) is displayed. This control value can now be modified by pressing the <┘ key. As soon as the change has been confirmed with the <┘ key, the fans will run with this control value.
If manual mode is deactivated again after this test, the GMM will revert to the set mode.
Mode The default mode setting is "Automatic internal". This means that the controller controls to the defined setpoint. For this to be possible, a setpoint must be entered (see page 34) and the input for the actual value must be defined in the I/O configuration (see page 53). The control parameters Kp. Ti and Td can still be modified in the service menu.
Limiter The speed of the fans can be limited e.g. to limit noise emissions at night. This value is set in the Night setback menu option. The night setback is activated either via input D2 or via the timer which is programmed in the Night setback menu option (see page 35).
Setpoint switchover It is possible to choose between two setpoints (e.g. for summer and winter operation). The switchover is effected via input D3.
The "Limiter" and "Setpoint switchover" functions generally need to be activated in the service menu (see page 47).
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3.1 EMC-compliant installation
The GMM EC/01-16 series controllers meet the requirements of resistance to EMC interference in accordance with EN 61000-6-2 and emissions in accordance with EN 61000-6-3.
They also comply with standards IEC 61000-4 -4/-5/-6/-11 for grid-bound interference. In order to guarantee EM compatibility, the following points must be noted:
3.2 Installation of the controller, ventilation
If the equipment has been taken from a very cool storage location, leave it at room temperature for 1- 2 hours before installation with the lid open to allow any residual moisture to disperse and hence avoid malfunctions during commissioning. The equipment may only be commissioned when it is absolutely dry. The sachet of silica gel (desiccant sachet) must be removed.
Once the equipment has been commissioned for the first time, the power supply and the internal control voltage must no longer be switched off for a long period. If this should nevertheless be necessary for operational reasons, suitable moisture protection must be provided.
There are 4 fixing drill holes in the housing for installation. The equipment may only be fixed at these points, any manipulations of the housing (e.g. drilling new fixing holes) is prohibited.
The cable entries must always be underneath; installation with cable entries at the side or even on top is not permitted!
If moisture problems occur in the housing owing to considerable external heating and cooling, the moisture must be dispersed by means of an air adjustment (cable screw with adjustment opening).
Keep an eye on good accessibility! The equipment must be easily accessible for any maintenance work.
Note:
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4.2 Controller fan connection
The connection for an EC fan consists of the power connection (single-phase 230 V or 3-phase 400 V) and the control connection (bus and DC power support for the fan electronics).
Power connection:
The power connections are not located in the GMM but in a separate connection box (e.g. GPD).
Control connection:
The communications and the DC power supply for the fans are connected on the GMM's double-level terminal block (see point 3 on equipment connection diagram page 6).
Depending on the model, there are 1 to 16 control connections for the EC fans on the lower PCB.
On the terminal block (see image bottom left), there are 2 terminals for the bus communications and 2 terminals for the power supply for each fan. The fan groups are identified on the PCB under the terminal block. The top row is used for the communications wiring and the bottom row for the power supply to the electronics in the EC fans.
Communications connection: Terminal A (white) and B (blue) top row
24 volt power supply: Terminal + (red) and – (black) bottom row
The connector terminals are designed for a maximum cable cross-section of 2.5 mm².
Fig. 4.2.1 GMM fan connections
Fan
connections
1 ... 8
Kommunikation 24 Volt
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For safety reasons, the potential-free signalling outputs (two-way contacts) are designed such that the corresponding signalling relay drops out i.e. the break contact of the corresponding two-way contact closes, when an event occurs. As a result a fault is also reported when a fault causes the power to the GMM to be interrupted (e.g. failed power supply).
5.1 Digital output (11/12/14) (priority 1 alarms)
All signals on the Priority 1 output are faults signalling the complete failure and shutdown of the heat exchanger.
The signalling relay has contacts 11/12/14. An alarm is signalled in the following situations:
If an alarm occurs, the signalling relay is switched (drops out) i.e. the two-way contact 11/12 closes. The load on this potential-free contact must not exceed 250 V / 1 A.
5.2 Digital output (21/22/24) (priority 2 alarms)
All signals on the Priority 2 output are events that do not result in the complete failure of the heat exchanger. These are warnings that the operation of the heat exchanger is impaired.
The signalling relay has contacts 21/22/24. A warning is signalled in the following situations:
If a warning occurs, the signalling relay is switched (drops out) i.e. the two-way contact 21/22 closes. The load on this potential-free contact must not exceed 250 V / 1 A.
5.3 Digital output (31/32/34) (in operation)
The signalling relay has contacts 31/32/34. The two-way contact 31/34 closes when a control signal is sent to the fans i.e. the fans are operational.
5.4 Digital output (41/42/44) (threshold)
You can set a threshold on the GMM. If the control value from the GMM to the fans exceeds this threshold, signalling relay 4 (contacts 41/42/44) is tripped. This can be used, for example, to switch a solenoid valve, control an actuator, activate a spray etc.
The threshold is not a FAULT, it is just a 2- point controller with an adjustable switching point. Do not add this contact to your fault report!
As soon as the set threshold is exceeded, the two-way contact 41/42 is closed. The load on this potential-free contact must not exceed 250 V / 1 A.
Fig. 5.4.1: Signalling outputs
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6.1 Enabling the GMM
The fans are enabled via terminal "D1" (enabling). The speed then depends on the control value. If the GMM is not enabled, the fans are disabled (speed = 0).
If the GMM is not to be enabled externally, terminal D1 must be connected using a jumper!
This enabling jumper is always built in at the factory.
Warning: Wrong connection can lead to destruction!
GMM EC01 .1 , GMM EC04.1 , GMM EC08.1 , GMM EC16.1 (see nameplate)
GMM EC01 , GMM EC04 , GMM EC08, GMM EC16 (see nameplate)
Fig. 6.1.: Connecting the external enabling contact
IMPORTANT: Under no circumstances may the controller be disabled by interrupting the mains voltage! Continuous switching of the supply voltage can lead to damage to the controller that is not covered by the warranty!
+24V +24V Y1 GND Y2 GND GND^ B^ A GND D1 D2 D3 GND +24V GND B1 B2 B3 B
Y1 GND Y2 GND GND^ B^ A GND D1 D2 D3 GND +24V^ GND^ B1^ B2^ B3^ B
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6.2 Speed limiter (night setback)
The (night) speed limiter is activated via terminal "D2". If this terminal is connected, the control signal, and hence also the fan speed, is limited to the adjusted value. The GMM will not exceed the speed set there. For setting the speed limiter, see section 10.2.3 Setpoints and for general activation see section 10.3. Service.
Warning: Wrong connection can lead to destruction!
GMM EC01 .1 , GMM EC04.1 , GMM EC08.1 , GMM EC16.1 (see nameplate)
GMM EC01 , GMM EC04 , GMM EC08, GMM EC16 (see nameplate)
Fig. 6.2: Activating the speed limiter
+24V +24V Y1 GND Y2 GND GND^ B^ A GND D1 D2 D3 GND +24V^ GND B1 B2 B3 B
Y1 GND Y2 GND GND^ B^ A GND D1 D2 D3 GND +24V GND B1 B2 B3 B
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The GMM has four analogue inputs. Two of these four inputs are current inputs (4 - 20 mA) (B1 and B2). One input B3 is an input for impedance sensors (PTC/KTY81-210). A voltage source of 0 - 10 V DC can be connected to the fourth input B4.
In the following the possibilities are described, how the inputs can be used and how they have to be connected.
Warning: Wrong connection can destroy the analogue inputs!
The 4-20 mA inputs may not be connected to 0-10V DC or directly to +24V, nor may their poles be reversed.
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7.1 Connection of a pressure transmitter to B1/B
1 or 2 sensors (2-wire sensors) can be connected:
+24V = Common supply voltage (GSW4003.1: brown (1), GSW4003: brown (1)) B1 = 4-20mA signal from sensor 1 (GSW4003.1: blue (3), GSW4003: green (2)) B2 = 4-20mA signal from sensor 2 (GSW4003.1: blue (3), GSW4003: green (2))
If you connect two pressure transmitters and both pressure transmitter inputs are configured for internal control in the I/O configuration (see 10.3.7 I/O configuration, the greater signal is forwarded to the control system and used for speed control (MAX - select between the two pressure transmitters).
NOTE: Older 3-wire sensors with a 4-20 mA signal output can also be connected but also require an earth potential. You can tap this from the GND terminal.
Do not install the sensor in the immediate vicinity of the compressor to protect it from large pressure impacts and vibrations. It should be installed as close to the condenser inlet as possible.
Fig. 7.1: Connection pressure transmitter
+24V +24V Y1 GND Y2 GND GND^ B^ A GND D1 D2 D3 GND +24V^ GND^ B1^ B2^ B3^ B
