Technical Manual Interfaces QT250 / 800
Technical Manual
Control interfaces for
Eltorque QT250 & QT800
Valve actuators
Revision Date: 2013-01-14
Author: Tor Erik Næbb
Technical Manual Control interfaces for QT250 & QT800
Revision history
Revision
date
04.03.2009
02.09.2009
Done
by
TEN
TEN
TEN
Approved by
Changes
BB
-
14.01.2013
BN
AEA
First version
Various changes
Changed Logo, added QT2500 and MT actuators,
various other changes.
Corrected characteristic values for digital interface
outputs
Referenced documentation
User Manual QT250 and QT800
User Manual QT2500
User Manual MT50 and MT150
Eltorque Manager 2 Manual
Eltorque Manager 3 Manual
Technical Manual Control interfaces for QT250 & QT800
Table of Contents
1. General information ...................................................................................................... 4
1.1 Introduction ............................................................................................................. 4
1.2 Terminology ............................................................................................................ 4
1.3 The Eltorque control interfaces ............................................................................... 6
1.4 Connection Terminals ............................................................................................. 7
1.5 Cable Glands .......................................................................................................... 9
1.6 Power supply connections ...................................................................................... 9
2. Digital ........................................................................................................................... 10
2.1 Functionality .......................................................................................................... 10
2.2 Installation ............................................................................................................. 10
3. Analogue ...................................................................................................................... 13
3.1 Functionality .......................................................................................................... 13
3.2 Installation ............................................................................................................. 13
4. Modbus......................................................................................................................... 15
4.1 Functionality .......................................................................................................... 15
4.2 Installation ............................................................................................................. 15
5. CANopen ...................................................................................................................... 17
5.1 Functionality .......................................................................................................... 17
5.2 Installation ............................................................................................................. 17
6. Configuration using Eltorque Manager ..................................................................... 20
7. Troubleshooting .......................................................................................................... 21
7.1 General ................................................................................................................. 21
7.2 Digital .................................................................................................................... 21
7.3 Analogue............................................................................................................... 21
7.4 Modbus and CANopen.......................................................................................... 22
Contact information:
ELTORQUE AS
Lyng Industrial Park
7125 Vanvikan Norway
Tel: +47 748 55 520
Fax: +47 74 85 55 12
Web: http://www.eltorque.com/
Technical Manual Control interfaces for QT250 & QT800
1. GENERAL INFORMATION
1.1 Introduction
Eltorque is a range of quarter-turn electric valve actuators suitable for use in a wide
variety of industrial environments.
The Eltorque actuators are characterized by:
 Compact size and good torque to size/ weight ratio
 Flexible control interfaces for easy integration with a wide range of control
systems
 Low power consumption
 Electronic configuration of speed, torque and other parameters
 Easy and cost effective installation
 Maintenance free
There are various actuator models available:
 QT250: Part turn, 250 Nm max torque
 QT800: Part turn, 800 Nm max torque
 QT2500: Part turn, 2500 Nm max torque
 MT50: Multi-turn, 50 Nm max torque
 MT150: Multi turn, 150 Nm max torque
This Technical Manual covers the functionality of the control interfaces for the
QT250 and QT800 Valve actuators. The actuators themselves including valve
interfacing, spare parts etc. are described in separate User manuals.
QT2500 and MT actuators are covered in separate User Manuals.
1.2 Terminology
Term
Valve actuator
Control
Interface
Configuration
Hazardous area
PLC
Digital Control
Analogue
Control
Description
An electric device for operation of valves in various process control
systems.
Electronic device controlling the valve actuator according to
signals from an overall control system. e.g. PLC or other type of
electronic controller.
The set-up of parameters, which affects the actuator’s
performance and behaviour.
Area in which the permanent or periodical presence of explosive
substances causes a risk of explosion.
A Programmable Logic Controller is a digital computer used for
automation of industrial processes, such as control of machinery
on factory assembly lines, measurement and control of process
plants etc.
Simple control utilizing relays, on/ off switches and indicators.
Allows only Open or Closed functionality for a valve actuator.
Step-less control utilizing analogue current or voltage signals, e.g.
4-20 mA, 0-10 V etc. Allows positioning of the valve actuator
between Open and Closed.
Technical Manual Control interfaces for QT250 & QT800
Term
Fieldbus
Control
Modbus
CANopen
Description
A fieldbus is an industrial computer network for real-time
distributed control of various devices, including valve actuators.
When Eltorque valve actuators are controlled by Fieldbus, the
functionality is extended in terms of positioning, commands,
feedback and configuration.
The Eltorque Modbus interface is using RS-485 serial
communication utilizing the Modbus protocol.
Modbus is a fieldbus which allows communication with max 31
actuators connected to the same “master-slave” network.
“Master-slave” means that the Modbus controller is a master which
actively sends commands and requests to the “slave actuators”.
The Eltorque CANopen interface is using the CAN (Controller Area
Network) communications standard.
CANopen is a fieldbus which allows communication between max
127 actuators connected to the same network. It is not a “masterslave” network (ref. Modbus), hence all nodes in the network can
actively send messages at its their own initiative.
The communication is prioritized, meaning that urgent messages
are transmitted and received before information with lower priority.
Compared to Modbus, CANopen has the following advantages:
 More reliable communication, i.e. it is more likely that the
information transmitted is received correctly by the recipient.
 More nodes pr network, max 127.
 More control and configuration features available.
Technical Manual Control interfaces for QT250 & QT800
1.3 The Eltorque control interfaces
There are 4 different Eltorque control interfaces available:
1. Digital: Open - Closed
2. Analogue: 4-20 mA positioning
3. Modbus: Fieldbus, max 31 actuators pr.
network.
4. Canopen: Fieldbus, max 127 actuators pr.
network.
The interface incl. connection terminals are
located inside the actuator’s control box.
During installation and configuration, this box
must be removed by unscrewing the six M4
HEX 3 mm fastening screws.
Illustration 1-1: Actuator and control box separated.
NOTE: When re-assembling the control box with the actuator, make sure no wires
are jammed between the surfaces and that the screws are cross-tightened. It is also
recommended to apply some seal lubrication on the gasket to ensure the actuator
remains water proof.
Control Interface
Control signal and
Configuration Connectors
FI
Interface
110-240 V
AC/ DC
L
N
G
Valve position sensor
DC Power
supply
Motor
Control
M
Motor
Illustration 1-2: Control interface schematics
The Eltorque control
interface consists of 3
main modules:
1. Power supply.
2. Motor Control.
3. Interface.
Technical Manual Control interfaces for QT250 & QT800
1.4 Connection Terminals
Note: Electrical installation can only be designed and made by personnel with the
appropriate skills and competence. Ensure all such work is done according to
applicable laws and regulations. Special requirements apply for installation in
hazardous locations.
The connection terminals are located inside the Eltorque Control box.
Configuration
DIP-switch
Control
signals
Voltage
Supply
Configuratio
n connector
Illustration 1-3: Connection terminals location.
The Voltage Supply and Configuration connectors are common for all interfaces,
while the DIP-switch and Control Signals will vary depending on the interface version.
All terminals can accommodate wires of cross section 0,5 - 2,5 mm2.
Technical Manual Control interfaces for QT250 & QT800
Connection terminals for 1.0 and 2.0 versions
Illustration 1-4: Pluggable screw-type
terminal.
0,6 x 3,5 mm Flathead screwdriver
recommended.
Operating instructions:
1: Check that terminal is open.
2: Insert wire.
3: Tighten screw firmly.
4: Pull wire to check that it is fastened properly.
Illustration 1-5: Spring-loaded terminal.
0,4 x 2,5 mm Flathead screwdriver
recommended.
Operating instructions:
1: Insert screwdriver to open terminal.
2: Insert wire.
3: Remove screwdriver.
4: Pull wire to check that it is fastened properly.
Connection terminals for 2.1 EX version
Illustration 1-6: EX E screw-type terminal.
0,6 x 3,5 mm Flathead screwdriver
recommended.
Illustration 1-7: EX E spring loaded terminal.
0,6 x 3,5 mm Flathead screwdriver
recommended, strip length 5-6 mm.
Operating instructions:
1: Check that terminal is open.
2: Insert wire, strip length 10 mm.
3: Tighten screw firmly, torque 0.4-0,5 Nm.
4: Pull wire to check that it is fastened properly.
Operating instructions:
1: Press and hold down lever with the
screwdriver.
2: Insert wire, strip length 5-6 mm.
3: Release lever.
4: Pull wire to check that it is fastened properly.
Note: On screw type terminals, it is recommended to use appropriate ferrules for
multi-conductor wires.
On spring-loaded terminals, ferrules are not recommended regardless of wire type.
Technical Manual Control interfaces for QT250 & QT800
1.5 Cable Glands
 Cable glands must be selected according to cable diameter.
 In order to maintain the Eltorque Actuator’s IP68
encapsulation, it is important to use IP68 rated cable
glands.
 When installing 2.1 EX versions in hazardous
environments, use only EX E certified cable glands.
 It is recommended to use EMC rated cable
glands and shielded cables in environments with
high levels of electro magnetic noise and
disturbances. Typical examples of such environments are in the vicinity to
generators, large electrical motors,
1-8: Cable glands.
frequency converters etc.
The Eltorque control box has 5 threaded holes for cable glands, and there are two
different versions of hole configurations available:
 2x M16 + 3 x M20. (Use M16 for signal cables)
 5x M20.
1.6 Power supply connections
Note: Electrical installation can only be designed and made by personnel with the
appropriate skills and competence. Ensure all such work is done according to
applicable laws and regulations. Special requirements apply for installation in
hazardous locations.
The supply voltage must be 230 V AC with an acceptable tolerance of 180-264 V AC.
The power consumption varies between 30 W and 120 W depending on whether the
actuator is in standby mode or is running.
Start-up current after loss of power will be max 5x1A/ 230V.
Each actuator has two power supply connectors enabling serial power connection of
multiple actuators. But keep the following aspects in mind when designing the circuit:
 Fuses must have a current rating according to max power consumption of all
actuators combined. Fuses with slow C-characteristic is recommended to avoid
undesired tripping during start-up
 Wiring must have appropriate cross-section according to max current
consumption.
 In case of power loss in the circuit, none of these actuators and valves can be
operated.
Fuse cabinet
Fuses
C-Characteristics
Actuator 1
L NG
L NG
Actuator 2
L NG
L NG
Actuator 3
L NG
L NG
Illustration 1-9: Multiple actuators with serial power connection.
Actuator n
L NG
L NG
Technical Manual Control interfaces for QT250 & QT800
2. DIGITAL
2.1 Functionality
The QT Digital Interface allows simple Open & Close operation of valves, i.e. you can
command the actuator to Close or Open the valve. The actuator provides feedback
when the valve is Closed, Open or a failure is triggering the Alarm function.
Valve No: X
Open
M
Close
Closed
Pr. Actuator:
2 Digital Inputs
3 Digital Outputs
Open
Alarm
M
DI
PLC
DO
Illustration 2-1: Digital Control using buttons and lamps, or control via PLC.
As shown on the illustration above, actuators with digital interface can be controlled
directly from a conventional panel with buttons/ switches and indicator lamps.
Alternatively, it can be controlled from a PLC with Digital inputs and outputs. This
allows extended functionality in terms of automatic control, visual user interface on
display etc.
2.2 Installation
Note: See section 1.4, 1.5 and 1.6 for more information about connection terminals,
cable glands and power supply connections.
The QT Digital interface has 2 inputs and 3 outputs as shown below:
”Old” interface, 10 terminals
”New” interface, 8 terminals
Digital Control Interface
Digital Control Interface
Closed +
Closed -
Open +
Open Alarm +
Alarm GND
Common
Close
Open
Common
Closed
Open
Alarm
GND
Output
Open
Input
Close
Output
Common
Input
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
10
7
8
Illustration 2-2: Terminal overview of “new and old” type of digital interface.
Technical Manual Control interfaces for QT250 & QT800
Note: On the 8-pole version, the output + terminals are merged into one Common
terminal. The functionality of the outputs is identical for both versions; the relays are
voltage-free and normally open. Max switching voltage to the output terminals are
277 VAC or 125 VDC. Maximum switching rating 1250 VA / 150 W. 5 A is the
maximum carrying current.
Input signals are given by bridging terminal 1+2 or 1+3, and the signal can be
constant or pulses of minimum 100 ms length.
In case both the Close and Open signals are active simultaneously; the actuator will
respond to the Open signal.
Note: The Common input terminal (#1) is active and has an internal power supply of
15 V/ 50 mA. Do not attempt to connect an external supply to this terminal as it can
damage the control interface.
Cable requirements and recommendations
Cable parameter
Required/ Recommended
Number of conductors
7
Cross section
0,5-1,5 mm2
Shield
Not mandatory, but is recommended in case the actuator is
placed in conjunction with equipment emitting high levels of
disturbances.
Length related resistance Max 100 m/m
Cable length
Max. 1000 m
Table 2-1: Cable requirements and recommendations.
The outputs provide feedback of the actuator’s status, i.e. Closed, Open and/ or
Alarm.
An alarm is triggered by the following failure scenarios:
 Manual emergency operation.
 Valve position out of defined operation area.
 Valve blocked.
 High temperature.
The digital interface can be used in various control circuits as shown below:
Technical Manual Control interfaces for QT250 & QT800
Open
Alarm
GND
Common
Close
Open
Common
Closed
Open
Alarm
GND
2
3
4
5
6
1
2
3
4
5
6
PLC
8
Illustration 2-3: Digital interface control circuit examples.
Alarm
X0 X1 X2
Digital In
7
Open
8
Max. 150V
AC/ DC Supply
+
-
Y0 Y1
Digital Out
7
Open
Closed
1
Close
Common
Output
Open
Input
Close
Output
Common
Input
Digital Control Interface
Closed
Digital Control Interface
Technical Manual Control interfaces for QT250 & QT800
3. ANALOGUE
3.1 Functionality
The QT Analogue interface allows control of regulation valves where positioning of
the valve is needed. The actuator provides continuous feedback of its actual position,
for comparison between desired and actual position. Both positioning and feedback
signals are analogue 4-20 mA. The control interface also has a digital Alarm output,
which is triggered by various failure scenarios.
Illustration 3-1: Analogue level and flow control.
3.2 Installation
Note: See section 1.4, 1.5 and 1.6 for more information about connection terminals,
cable glands and power supply connections.
The signal terminals are arranged as shown below:
Analogue In +
Analogue In -
Analogue Out +
Analogue Out -
Alarm +
Alarm -
+15 VDC
GND
Analogue Control Interface
1
2
3
4
5
6
7
8
Illustration 3-2: Analogue Control interface terminal overview.
Recommended cable cross-section is 0,5-1,5 mm2. Analogue control signals can be
sensitive to electro magnetic noise, and Lyng Motor strongly recommends shielded
cables and appropriate cable glands in case the actuator is placed near to or
connected in the same network as equipment emitting high levels of disturbances.
control circuit.
Technical Manual Control interfaces for QT250 & QT800
Analogue In +
Analogue In -
Analogue Out +
Analogue Out -
Alarm +
Alarm -
+15 VDC
GND
Analogue Control Interface
1
2
3
4
5
6
7
8
-
- +
Out
In
Active
Analogue IO
+
+
X0
Digital In
The analogue input and output are both passive,
and need to be powered from the PLC or other
type of controller, supply voltage 12-24 VDC.
Note: The accuracy of an actuator with analogue
interface is +/- 5%, i.e. if control signal is 12 mA/
50%, the valve position will be in the range of
45-55%.
If a higher accuracy is needed, please consider
a Fieldbus interface with accuracy of +/- 0,5%
instead See section 4 and 5 for more
information.
The Alarm output is triggered by the following
scenarios:
 Manual emergency operation.
 Valve position out of defined operation area.
 Valve blocked.
 High temperature.
 Power failure. (Only if alarm output is
inverted)
 4-20 mA control signal is lost.
By using the Eltorque Manager, you can
configure the following parameters in the
Analogue control interface:
 Analogue input and output calibration, this is
necessary to ensure accurate control.
 Invert inputs and outputs
Note: It is recommended to invert the Alarm
output, as this also will trigger the alarm in case the actuator is subjected to a
Illustration 3-4: Example of 4-20 mA
power failure.
Analogue
Controller
control circuit.
 In case 4-20 mA control signal is lost, the actuator has a configurable fail safe
function: Close valve, Open valve or Idle, i.e. position remains unchanged.
See section 6 for more information about the Eltorque Manager.
Cable requirements and recommendations
Cable parameter
Required/ Recommended
Number of conductors
6
Cross section
0,5-1,5 mm2
Shield
Not mandatory, but is recommended in case the actuator is
placed in conjunction with equipment emitting high levels of
disturbances.
Length related resistance Max 100 m/m
Cable length
Max. 1000 m
Table 3-1: Cable requirements and recommendations.
Technical Manual Control interfaces for QT250 & QT800
4. MODBUS
4.1 Functionality
The Eltorque Modbus interface is using RS-485 serial communication.
Modbus allows communication between maximum 31 actuators connected to the
same “master-slave” network. “Master-slave” means that the Modbus controller is the
“master” which actively sends commands and requests to the “slave” actuators.
Modbus fieldbus network, Baudrate 19,2 or 38,4 kBps
PC or PLC based
Modbus controller
Terminal
resistor
Terminal resistor
Maximum 31 units in one loop
Illustration 4-1: Example of Modbus schematics, controller placed in the center of the network.
Each actuator in a Modbus network must be assigned a unique Node ID in the range
1-31.
Commands to actuator
Open
Close
Go to position 0-100%.
Feedback from actuator
Position 0-100%
Status: Open, Closed,
Error messages
Configuration
Torque
Speed
Table 4-1: The Modbus interface offers functionality in terms of commands, feedback and
configuration.
For more technical information about the Eltorque Modbus communication, refer to
the “Eltorque modbus communication definitions”.
Send request by e-mail to [email protected] if you need this document.
4.2 Installation
Note: See section 1.4, 1.5 and 1.6 for more information about connection terminals,
cable glands and power supply connections.
The signal terminals are arranged as shown in Illustration 4-2.
Modbus Control Interface
Modbus Control Interface
Incoming
Outgoing
Incoming
A (TxD+/ RxD+)
B (TxD-/ RxD-)
GND
A (TxD+/ RxD+)
B (TxD-/ RxD-)
GND
A (TxD+/ RxD+)
B (TxD-/ RxD-)
GND
Bridge for
terminal resistor
Technical Manual Control interfaces for QT250 & QT800
1
2
3
6
7
8
1
2
3
4
B (TxD-/ RxD-)
GND
5
A (TxD+/ RxD+)
Outgoing
6
7
8
Illustration 4-2: Left: Terminals on interface with DIP-switch. Right: Terminals on interface
without DIP-switch.
Node ID= 0
Node ID= 16
Node ID= 0
Node ID= 8
Node ID= 0
Node ID= 4
Node ID= 0
Node ID= 2
Node ID= 0
Node ID= 1
Spare - not in use
Time delay 0 ms
Baudrate
38,4 Kbit/s
On
4
5
6
7
8
9
10
On Off On Off On Off On Off On Off On Off On Off
Time delay 20 ms
Off
3
Off
Baudrate
19,2 Kbit/s
2
On
Terminal resistor active
1
On Off
Terminal resistor not active
On Modbus interfaces with DIP-switch, terminal resistor, baudrate and Node ID can
be configured as shown below:
DIP switch configuration Modbus
Illustration 4-3: Modbus DIP switch configuration.
On Modbus interfaces without DIP-switch, baudrate and Node ID are configured
using the Eltorque Manager, see section 6 for more information. Terminal resistor is
set by bridging terminal 4 and 5.
Cable requirements and recommendations
Cable parameter
Required/ Recommended
Number of conductors
1+2
Twisted pair for TxD and RxD signals
Cross section
0,5-1,5 mm2
The transmission range increases with larger cable crosssection and lower capacitance.
Shield
Yes
Requires use of EMC cable glands
Nominal impedance
Max 100 Ω
Capacitance
Max 42 pF/ m
Transmission range increases with lower capacitance
Length related resistance Max 70mΩ/m.
Cable length
500 m
Terminal resistor
Yes, at both ends
Table 4-2: Cable requirements and recommendations.
Terminal resistor
Incoming
Outgoing
GND
A (TxD+/ RxD+)
B (TxD-/ RxD-)
GND
A (TxD+/ RxD+)
B (TxD-/ RxD-)
GND
GND
Outgoing
B (TxD-/ RxD-)
B
Modbus Control Interface
Incoming
A (TxD+/ RxD+)
A
Modbus Control Interface
GND
Modbus terminals
Node ID n
B (TxD-/ RxD-)
Modbus
controller
Node ID 1
A (TxD+/ RxD+)
Technical Manual Control interfaces for QT250 & QT800
1
2
3
6
7
8
1
2
3
6
7
8
Shielded cable
Shielded cable
Terminal resistor
DIP switch 1 ON or
Bridge terminal 4 & 5
Twisted pair
Illustration 4-4: Example of Modbus network connections, controller placed in the end with
terminal resistor.
5. CANOPEN
5.1 Functionality
CANopen is a fieldbus which allows communication between maximum 127 actuators
connected to the same network. It is not a “master-slave” network (ref. Modbus),
hence all nodes in the network can actively send messages at their own initiative.
Communication is prioritized, meaning that urgent messages are transmitted and
received before information with lower priority.
Compared to Modbus, CANopen has quite a few advantages:
 More reliable communication, i.e. it is more likely that the information transmitted
is correctly received by the recipient.
 More nodes pr network.
 More control and configuration features available.
 Higher performance.
CANopen fieldbus network, 50 or 125 kBps, max 500 or 250 m cable length
PC or PLC based
CAN controller
Terminal
resistor
Terminal resistor
Maximum 127 units in one loop
Illustration 5-1: Example of CANopen schematics, controller placed in the center of the
network.
For more technical information about the Eltorque CANopen communication, refer to
the Eltorque CANopen communication definitions.
Send request by e-mail to [email protected] if you need this document.
Technical Manual Control interfaces for QT250 & QT800
5.2 Installation
Note: See section 1.4, 1.5 and 1.6 for more information about connection terminals,
cable glands and power supply connections.
The signal terminals are arranged as shown in Illustration 5-2.
CANopen Control Interface
CAN_H
CAN_L
GND
CAN_H
CAN_L
Bridge for
terminal resistor
2
3
6
7
8
1
2
3
4
5
CAN_L
GND
1
Outgoing
CAN_H
CAN_L
Incoming
CAN_H
Outgoing
GND
Incoming
GND
CANopen Control Interface
6
7
8
Illustration 5-2: Left: Terminals on interface with DIP-switch. Right: Terminals on interface
without DIP-switch.
On CANopen interfaces with DIP-switch, terminal resistor and Node ID can be
configured as shown below:
DIP switch configuration CANopen
Node ID= 0
Node ID= 64
Node ID= 0
Node ID= 32
Node ID= 0
Node ID= 16
Node ID= 0
Node ID= 8
Node ID= 0
Node ID= 4
Node ID= 0
Node ID= 2
Node ID= 0
Node ID= 1
Not in use
Terminal resistor not active
Terminal resistor active
1
2
3
4
5
6
7
8
9
10
On Off On Off On Off On Off On Off On Off On Off On Off On Off On Off
Illustration 5-3: CANopen DIP switch configuration.
On CANopen interfaces without DIP-switch, Node ID are configured using the
Eltorque Manager, see section 6 for more information. Terminal resistor is set by
bridging terminal 4 and 5.
Baud rate 50 or 125 Kbit/s can only be set using Eltorque Manager regardless of
DIP-switch presence.
Important: 50 Kbit/s Baud rate is recommended as this makes the CANopen
network less sensitive to signal disturbances and issues of cable type or length. The
network response time is normally nearly the same for both baud-rates.
Technical Manual Control interfaces for QT250 & QT800
Detailed specification of cables suitable for CAN communication can be found in the
ISO 11898-2 standard. Below is a brief sum-up of considerations related to choice of
cable.
Cable parameter
Required/ Recommended
Number of conductors
1+2
Twisted pair for CAN_H and CAN_L signals
Cross section
0,5-1,5 mm2
The transmission range increases with larger cable crosssection.
Shield
Yes - Requires use of EMC cable glands
Nominal impedance
120 Ω
Capacitance
Max 42 pF/m
Transmission range increases with lower capacitance.
Length related resistance Max 70mΩ/m
Specific Line Delay
5 ms/m
Cable length
Max 500 m with baudrate 50 kbit/s
Max 250 m with baudrate 125 kbit/s
Terminal resistor
Yes, at both ends.
Table 5-1: Cable requirements and recommendations.
1
2
3
4
5
CAN_L
8
CAN_H
7
Outgoing
GND
6
Bridge for
terminal resistor
5
CAN_L
4
CAN_H
3
Incoming
GND
2
CAN_L
1
Outgoing
CAN_H
Bridge for
terminal resistor
Twisted pair
CAN_L
3
CANopen Control Interface
Incoming
CAN_H
CAN_L
2
CANopen Control Interface
GND
GND
CAN_H
1
Node ID n
GND
CANopen
controller
Node ID 1
6
7
8
Terminal resistor
Shielded cable
Shielded cable
Terminal resistor
DIP switch 1 ON or
Bridge terminal 4 & 5
Illustration 5-4: Example of CANopen network connections, controller placed in the end with
terminal resistor.
Technical Manual Control interfaces for QT250 & QT800
6. CONFIGURATION USING ELTORQUE MANAGER
The Eltorque actuators are configured using a standard PC with the Eltorque
Manager 2 SW installed and a special configuration cable connected via USB.
1. The Eltorque Manager can be downloaded from
www.eltorque.com\downloads.
To install it on your computer, double-click the Manager Setup.msi file.
2. Follow instructions on screen to complete the installation. The
USB cable drivers will also be installed automatically.
3. Connect the configuration cable to a USB-port on your PC
4.
Double click the Eltorque Manager icon to start program.
Illustration 6-1: Eltorque Manager Screenshot without actuator connection.
Note: The Eltorque Actuator image will be shaded and values under Actuator type
set to dummy until you establish connection with the Actuator and its Control
Interface.
For more information about the use of the Eltorque Manager, please refer to its builtin user guide found under Help – Help Content.
Technical Manual Control interfaces for QT250 & QT800
7. TROUBLESHOOTING
7.1 General
Problem description
The actuator does neither respond to
control signal nor give any feedback and
there is little resistance if you try to turn
the emergency operation hand wheel.
It is not possible to establish connection
with Eltorque manager.
Actuator is not able to turn valve with the
desired speed or does not move to
correct open or closed position.
Cause & solution
1. No input power supply, check wiring
and fuses.
2. Control interface electronics has
stopped running, disconnect input
power supply, wait 3 seconds and
reconnect to reset the electronics.
1. Check that configuration cable is
properly connected.
2. Check configuration cable switch, it
must be set to 0.
1. Use Eltorque Manger to re-configure
the actuator’s speed, torque and/ or
open closed positions.
7.2 Digital
Problem description
Cause & solution
The actuator does not respond to input
control signals.
1. Bad connection, check wiring.
2. A supply voltage is connected to the
Common terminal, must be
disconnected immediately.
The actuator does not give Open, Closed
or Alarm feedback.
1. Bad connection, check wiring.
2. No power supply in the feedback
circuits, check PLC or power supply.
7.3 Analogue
Problem description
Cause & solution
The actuator does not respond to
analogue input control signals.
1. Bad connection, check wiring.
2. No power supply from the 4-20 mA
PLC/ controller outputs. Check that
supply voltage is 12-24 VDC.
3. Incorrect type of PLC/ Controller
analogue output, verify that it is 4-20
mA.
Technical Manual Control interfaces for QT250 & QT800
Problem description
The actuator does not give analogue
output feedback signal.
Analogue input or output signal is
inaccurate.
The actuator does not give digital alarm
signal.
Cause & solution
1. Bad connection, check wiring.
2. No power supply from the 4-20 mA
PLC/ controller inputs. Check that
supply voltage is 12-24 VDC.
3. Incorrect type of PLC/ Controller
analogue input, verify that it is 4-20
mA.
1. Use Eltorque Manager to calibrate the
input and output, see section 6 for
more information.
2. Input and output is inverted
4. Bad connection, check wiring.
1. No power supply in the feedback
circuits, check PLC or power supply.
7.4 Modbus and CANopen
Problem description
The actuator does neither respond to
control commands nor provide feedback.
Unstable Fieldbus communication.
Cause & solution
1. Bad connection, check wiring.
2. Terminal resistor not present.
3. Baud rate not set correctly; must be
the same for all actuators and PLC.
4. Incorrect Node ID.
1. Cable is outside specifications given
in sections 4.2 and 0 respectively.
Pay special attention to shield and
length.
2. Terminal resistor not present.
Technical Manual Control interfaces for QT250 & QT800
ELTORQUE AS
Lyng Industrial Park
7125 Vanvikan, Norway
Tel: +47 748 55 520
Fax: +47 74 85 55 12
Web: http://www.eltorque.com/
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