Contrec 515 User manual

Model 515 Flow Computer
Operation Manual
Application CR02
Ratio/Blending Process Controller
for
Volumetric Analog Flowmeters
18 May 2007

Model 515 Flow Computer - Operation Manual
© Contrec Pty Ltd 2006
The instructions given herein cover the general description, installation, operation and maintenance of the subject
equipment. Contrec Pty. Ltd. reserves the right, without prior notice, to make engineering refinements that may not
be reflected in this manual.
Should any questions arise which cannot be answered specifically by this manual, they should be directed to
Contrec Pty Ltd for further detailed information and technical assistance.
Contrec Pty. Ltd. will not accept any liability for either direct or consequential damages resulting from the use or
misapplication of the contents of this manual.
Part of the software embedded in this product is eCos - Embedded Configurable Operating System, a trademark of
Red Hat. Portions created by Red Hat are Copyright © 1998, 1999, 2000 Red Hat, Inc.
(http://www.redhat.com). All rights reserved
The software in this product was in part provided by Red Hat and any express or implied warranties, including, but
not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no
event shall the author be liable for any direct, indirect, incidental, special, exemplary, or consequential damages
(including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business
interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including
negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such
damage.
Contrec Pty Ltd
22 Hall Street Hawthorn East, Melbourne 3123 AUSTRALIA
Tel: [phone] Fax: [phone]
Email: [email protected]
Contrec - USA, LLC
916 Belcher Drive Pelham AL 35124 USA
Tel: [phone] Fax: [phone]
Email: [email protected]
Contrec Europe Limited
PO Box 436 Sowerby Bridge, West Yorkshire HX6 3YA, UK
Tel: [phone] Fax: [phone]
Email: [email protected]
Website: www.contrec.com.au
Publication No: 515-CR02-OM - 18 May 2007

515 CR02 - 18 May 2007 iii
Safety Notice
The information in this safety notice is for the prevention of injury to personnel and
damage to the instrument.
The manufacturer assumes no liability for injury or damage caused by misuse of the
instrument or for modifications made to the instrument.
Qualified Personnel
The instrument must be installed, operated and serviced by persons who have been properly
trained and authorised. Personnel must read and understand this manual prior to installation and
operation of the instrument.
Static Hazard
The 500 series flow computer uses high speed CMOS circuitry which is sensitive to static
damage. The user should observe accepted safety practices for handling electronic devices,
especiallyduringservicing.Oncetheunitis installed, grounded and interconnected,the chances
of static damage are greatly reduced.
Voltage Hazard
Before connecting power to the instrument, ensure that the supply voltage for the AC or DC
input is suitable. The AC voltage rating is as stated on the serial number plate. Personnel should
take all due care to avoid electric shock.
Welding Hazard
Do not perform electric welding in close proximity to the instrument or its interconnecting
cables. If welding in these areas must be performed, disconnect all cables from the instrument.
Failure to do so may result in damage to the unit.
Moisture Hazard
To avoid electrical faults and corrosion of the instrument, do not allow moisture to remain in
contact with the instrument.
515 CR02 - 18 May 2007

iv 515 CR02 - 18 May 2007

v
1 Introduction
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Analog Input Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Displayed Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Main Menu Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Isolated Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Relay Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Software Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Specifications
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Installation
Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Terminal Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog Input Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Logic Input Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4-20mA Output Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pulse Output Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Control Relays (Alarms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
RC Network for Interference Suppression . . . . . . . . . . . . . . . . . . . . . . 13
Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
RS-232 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Infra-red Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
RS-485 Port (Advanced Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Earthing and Shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Operation
Normal Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Default Variable & Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Contents
515 CR02- 18 May 2007

vi 515 CR02- 18 May 2007
Status Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Front Panel Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Main Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Peak Flowrates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Data Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Model Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Process Control Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Logic Input Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Tuning the Control Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Tuning the Ratio Trim Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 Instrument Calibration
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Calibration View Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Calibration Set Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Changing the Instrument Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Calibration Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Instrument Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Time Settings and Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
General Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Test Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
System Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Warning Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6 Communications
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Hardware Interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Simple ASCII Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Requests Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Instrument Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Corrupted or Invalid Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Modbus RTU Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
List of Data Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Printer Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Types of Printouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Printer Data Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

515 CR02- 18 May 2007 vii
Appendix A Glossary
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Appendix B Model Numbers
Product Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Custom Version Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Application Information Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Appendix C Units of Measurement
Available Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

viii 515 CR02- 18 May 2007

ix515 CR02- 18 May 2007
List of Figures
1 Typical Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 500 Series Instrument Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . 7
3 Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Externally Powered Voltage Transmitter . . . . . . . . . . . . . . . . . . . . . . 9
5 Internally Powered Voltage Transmitter . . . . . . . . . . . . . . . . . . . . . . 9
6 Externally Powered Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Internally Powered Current Loops . . . . . . . . . . . . . . . . . . . . . . . . 10
8 Logic Inputs Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . 11
9 Output 4-20mA Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . 11
10 Output Pulse Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . 12
11 Relay Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
12 RS-485 Interface Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13 Logged Data Display Methods . . . . . . . . . . . . . . . . . . . . . . . . . . 21
14 Calibration Menu Tree Sheet 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 32
15 Calibration Menu Tree Sheet 2 . . . . . . . . . . . . . . . . . . . . . . . . . . 33
16 RS-232 Cable Connections to a Computer . . . . . . . . . . . . . . . . . . . . 54
17 RS-485 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

x515 CR02- 18 May 2007

1
Chapter 1
Introduction
Features •Tailored for volumetric analog input such as vortex flowmeters
•Uses PI Loop Control
•Selection of various control modes
•“Flushing” available via external logic signal
•Allows for cascade trim control when ratio of totals is required
•Allows for non-linear correction
•Selection of second language and user tags
•RTC logging with over 1000 entries
•Infra-red communications port on front panel
•Pulse width and scaling of pulse output
•4-20mA retransmission
•Selectable protocols on serial ports including Modbus RTU and Printer
output
•Front panel adjustment of 8-24V DC output voltage
•Backlit display with LCD backup
Overview
The 515 CR02 application is a single loop process controller measuring the
volume flow in a main and process lines using analog flow inputs. It can
operate in local (manual), loop, ratio or blend mode and has a tuning menu
to easily determine the Proportional Band and Integral Time values used in
the PI control algorithm.
The main and process flows are used to determine the net volume flow. The
operator can view the actual ratio and deviation and has the ability to change
the controlling setpoint directly from the main menu if access has been
authorized.
The PI control of the process flow is via a 4-20mA proportional valve or
pump controller. It has integral wind-up protection and a deadband and
output ramp time can be programmed to reduce wear on valves and
actuators and provide for bumpless operation.
515 CR02 - 18 May 2007

Introduction
2515 CR02 - 18 May 2007
Calculations
There are three types of control modes in which the process flow is
dependent on the main flow. These are RATIO, BLEND-1 and BLEND-2
modes where the relationship between the flows are as follows:
Ratio Control Mode.
The process flow is a ratio of the main flow (0 to 400% range).
Blend Control Modes.
These modes cater for blending points before and after the main flowmeter.
The process flow is a ratio of the net (combined) flow (0 to 80% range).
Analog Input Scaling
The analog inputs in this instrument are scaled by the following general
formula:
where:
Correction Type
•LINEAR: when the instrument is not required to apply
correction
•NON-LINEAR: when the instrument applies correction from
the points in the correction table
Displayed Information
The front panel display shows the current values of the input variables and
the results of the calculations.
Ratio% Pflow
Mflow
-------------100×=
Ratio% Pflow
Netflow
----------------- 100×=
Pmin = minimum point (equivalent to offset)
Pmax = maximum point (Pmax – Pmin is equivalent to span)
A* = normalised signal (0 to 1) with correction applied for a flow input
fA() Pmin Pmax Pmin–()A*⋅+=
A* A=
A* Ac =

Introduction
515 CR02 - 18 May 2007 3
The instrument can be supplied with a real-time clock for data logging of
over 1000 entries of the variables as displayed on the main menu.
Main Menu Variables
Refer to Available Units of Measurement on page 78 for the list of
available units.
Communications
There are three communication ports available as follows:
•RS-232 port (standard)
•RS-485 port (advanced option)
•Infra-red port (on front panel)
The ports are available for remote data reading, printouts and for initial
application loading of the instrument.
Isolated Outputs
The opto-isolated outputs can re-transmit any main menu variable. The type
of output is determined by the nature of the assigned variable. Totals are
output as pulses and rates are output as 4-20mA signals. One output is
standard, a second output is available as an option.
Relay Outputs
The relay alarms can be assigned to any of the main menu variables of a rate
type. The alarms can be fully configured including hysteresis. Two relays
are standard with an additional two available in the advanced option.
Main Menu
Variables Default Units Variable Type
Net Volume m3Total
Net Flowrate m3/min Rate
Main Line Volume m3Total
Main Line Flowrate m3/min Rate
Process Line Volume m3Total
Process Line Flowrate m3/min Rate
Process Ratio % Rate
Process Control Output % Rate
Process Flowrate Deviation % Rate

Introduction
4515 CR02 - 18 May 2007
Software Configuration
The instrument can be further tailored to suit specific application needs
including units of measurement, custom tags, second language or access
levels. A distributor can configure these requirements before delivery.
Instrument parameters including units of measurement can be programmed
in the field, according to the user access levels assigned to parameters by the
distributor.
All set-up parameters, totals and logged data are stored in non-volatile
memory with at least 30 years retention.
Figure 1 Typical Application Diagram
Approvals
This instrument conforms to the EMC-Directive of the Council of European
Communities 89/336/EEC and the following standards:
•Generic Emission Standard EN 50081-1 Residential, Commercial &
Light Industry Environment.
•Generic Emission Standard EN 50081-2 Industrial Environment.
•Generic Immunity Standard EN 50082-1 Residential, Commercial &
Light Industry Environment.
•Generic Immunity Standard EN 50082-2 Industrial Environment.
In order to comply with these standards, the wiring instructions in Chapter
3 - Installation must be followed.
Main Flow
Proportional
Control Valve
Analog
Input 3
Process Flow Flowmeters
Analog
Output 1
Analog
Input 4
Example of
Blend-1
control mode

5
Chapter 2
Specifications
General Inputs
Outputs
Operating Environment
Temperature -20°C to +60°C (conformal coating)
+5°C to +40°C (no coating)
Humidity 0 to 95% non condensing (conformal
coating)
5% to 85% non condensing (no coating)
Power Supply 95...135 V AC or 190...260 V AC or
12...28 V DC
Consumption Typically 6W
Protection Sealed to IP65 (Nema 4X) when panel
mounted
Dimensions 147mm (5.8") width
74mm (2.9") height
167mm (6.6") depth
Display
Type Backlit LCD with 7-digit numeric display
and 11-character alphanumeric display
Digits 15.5mm (0.6") high
Characters 6mm (0.24") high
LCD Backup Last data visible for 15min after power
down
Update Rate 0.3 second
Non-volatile Memory
Retention > 30 years
Data Stored Setup, Totals and Logs
Approvals
Interference compliance
Enclosure ATEX, FM, CSA and SAA approved
enclosures available for hazardous areas
Real Time Clock (Optional)
Battery Type 3 volts Lithium button cell (CR2032)
Battery Life 5 years (typical)
Analog Input (General)
Overcurrent 100mA absolute maximum rating
Update Time < 1.0 sec
Configuration 4-20mA, 0-5V and 1-5V input
Non-linearity Up to 20 correction points (flow inputs)
4-20mA Input
Impedance 100ohms (to common signal ground)
Accuracy 0.05% full scale (20°C)
0.1% (full temperature range, typical)
0-5 or 1-5 Volts Input
Impedance 10Mohms (to common signal ground)
Accuracy 0.05% full scale (20°C)
0.1% (full temperature range, typical)
Logic Inputs
Signal Type CMOS, TTL, open collector, reed switch
Overvoltage 30V maximum
Relay Output
No. of Outputs 2 relays plus 2 optional relays
Voltage 250 volts AC, 30 volts DC maximum
(solid state relays use AC only)
Current 3A maximum
Communication Ports
Ports RS-232 port
RS-485 port (optional)
Infra-red port
Baud Rate 2400 to 19200 baud
Parity Odd, even or none
Stop Bits 1 or 2
Protocols ASCII, Modbus RTU, Printer
515 CR02 - 18 May 2007

Specifications
6515 CR02 - 18 May 2007
Important: Specifications are subject to change without notice.
Transducer Supply
Voltage 8 to 24 volts DC, programmable
Current 70mA @ 24V, 120mA @ 12V maximum
Protection Power limited output
Isolated Output
No. of Outputs 1 configurable output (plus 1 optional)
Configuration Pulse/Digital or 4-20mA output
Pulse/Digital Output
Signal Type Open collector
Switching 200mA, 30 volts DC maximum
Saturation 0.8 volts maximum
Pulse Width Programmable: 10, 20, 50, 100, 200 or
500ms
4-20mA Output
Supply 9 to 30 volts DC external
Resolution 0.05% full scale
Accuracy 0.05% full scale (20°C)
0.1% (full temperature range, typical)

7
Chapter 3
Installation
Panel Mounting
The instrument should be located in an area with a clean, dry atmosphere
that is also relatively free of shock and vibration.
The standard mounting procedure is panel mounting in a cutout that is
139mm wide by 67mm high. Two side clips secure the unit into the panel.
Figure 2Figure 2 shows the panel mounting requirements for the 500 Series
Instrument.
Figure 2 500 Series Instrument Panel Mounting
145mm
Side View
22mm
70mm
67mm
139mm
25mm
66mm
Min. 189mm
Panel Cut-out
Front
Panel
74mm
Mounting Clip
138mm
147mm
Rear Connectors Top View RS232
Port
515 CR02 - 18 May 2007

Installation
8515 CR02 - 18 May 2007
Electrical Connection
Rear Panel Connections
Figure 3 shows the connections on the rear panel of the instrument.
Figure 3 Rear Panel Connections
Terminal Designations
RS232 Port
CAUTION
MAINS
ENA
AC MAINS
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
RC R1 R2 R3 R4
RELAYS
+ - G1+2+3+4+C- + - + -
RS485 LOGIC INPUT OUT1 OUT2
123456789101112131415161718
FINP SG EXC V AINP1 AINP2 AINP3 AINP4 Vo G Vi SH
1+2+-1+2+3++-+-+-+-+-+E
Terminal Label Designation Comment
1 FINP 1+ Frequency Input 1+ Not used
2 FINP 2+ Frequency Input 2+ Not used
3 SG - Signal ground
4 EXC V 1+ Excitation Term 1+ Not used
5 EXC V 2+ Excitation Term 2+ Not used
6 EXC V 3+ Excitation Term 3+ Not used
7AINP1 + Analog input ch 1 (+) Not used
8 - Analog input ch 1 (-)
9AINP2 + Analog input ch 2 (+) Not used
10 - Analog input ch 2 (-)
11 AINP3 + Analog input ch 3 (+) Main flow input
12 - Analog input ch 3 (-)
13 AINP4 + Analog input ch 4 (+) Process flow input
14 - Analog input ch 4 (-)
15 Vo + 8-24 volts DC output Overload protected
16 G - DC Ground
17 Vi + DC power input DC power in 12-28V
18 SH E Shield terminal
EAC
MAINS
E Mains ground AC power in 95-135V or
190-260V
N N Mains neutral
A A Mains active
19
RS485
+ RS485 (+)
Advanced option20 - RS485 (-)
21 G RS485 ground
22
LOGIC
INPUTS
1+ Switch 1 Inhibit Process Flow
23 2+ Switch 2
24 3+ Switch 3
25 4+ Switch 4
26 C- Signal ground
27 OUT 1 + Output ch 1 (+) Process control output
28 - Output ch 1 (-)
29 OUT 2 + Output ch 2 (+) Advanced option
30 - Output ch 2 (-)
31
RELAYS
RC Relay common
32 R1 Relay 1
33 R2 Relay 2
34 R3 Relay 3 Advanced option
35 R4 Relay 4
RS232 port 9-pin serial port
Terminal Label Designation Comment

Installation
515 CR02 - 18 May 2007 9
Inputs
Analog Input Connections
All analog inputs can accept DC signals ranging from 0-5V, 1-5V and
current signals from 4 to 20mA.
CAUTION
Applying levels of input current above the absolute maximum
rating (100mA) may cause permanent damage to the input
circuitry.
0-5 and 1-5 Volt Inputs
For externally powered voltage transmitters, connect each transmitter to a
pair of input terminals as shown in Figure 4. Refer to Terminal
Designations on page 8 for specific terminal numbers for this application.
Figure 4 Externally Powered Voltage Transmitter
Connect internally powered voltage transmitters as shown in Figure 5.
Figure 5 Internally Powered Voltage Transmitter
4-20mA Inputs
For externally powered current loops, connect each transmitter to a pair of
input terminals as shown in Figure 6. Terminal Designations on page 8 for
specific terminal numbers for this application.
+
-
-
+
Signal
Transmitter 18 Shield
Analog
Input
(AINPn)
15
-
-
+
+
16
Vo +8...24V DC
DC ground
Signal
Transmitter
18 Shield
Analog
Input
(AINPn)

Installation
10 515 CR02 - 18 May 2007
Figure 6 Externally Powered Current Loop
The internal overload-protected power supply has sufficient power for three
current loops at 24V DC (more current loops can be supplied by using a
reduced voltage setting). Connect internally powered current loops as
shown in Figure 7.
Figure 7 Internally Powered Current Loops
Logic Input Connection
These inputs are designed to be connected to CMOS, TTL, open collector
signals or a voltage free contact switch. A minimum activation time of
300ms is required to guarantee reading of an input.
It is possible to read the status of all the logic inputs via a Modbus register
even if they are not used for a control purpose in the application.
+-
Transmitter
Analog
Input
(AINPn)
+
-
15
+
+
-Analog
Input
+
+
-Analog
Input
Vo +8...24V DC
(AINPn)
(AINPn)
Transmitter
Transmitter