User’s Guide
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CN3440 SERIES
Universal Temperature & Process
Controllers
Installation Guide
CONTENTS
1
2
INTRODUCTION .................................. 2
PREPARATION .................................... 3
2.1 Checking the Code Number......... 3
3
4
MECHANICAL INSTALLATION .......... 4
3.1 Siting .......................................... 4
3.2 Mounting ...................................... 5
ELECTRICAL INSTALLATION ............ 6
4.1 Access to Terminals..................... 6
4.2 Setting the Input Selector Links ... 6
4.3 Setting the Isolated Output Link ... 6
4.4 Cable Glands and
Conduit Fixings ............................ 8
4.4.1 Cable Glands
(IEC – 20mm) ................... 8
4.4.2 Conduit Adaptors
(N. American – 0.5in)........ 8
4.4.3 Cable Glands
(N. American – 0.5in)........ 9
4.5 Connections Summary............... 10
4.6 Input Connections ...................... 12
4.6.1 Thermocouple
(THC) Inputs ................... 12
4.6.2 3-lead Resistance
Thermometer (RTD)
Inputs .............................. 12
4.6.3 2-lead Resistance
Thermometer (RTD)
Inputs .............................. 12
4.6.4 Links for Unused Inputs .. 12
4.7 Output Connections ................... 14
4.8 Relay Connections ..................... 14
4.9 Motorized Valve Connections .... 14
4.10 Logic Input Connections ............ 15
4.11 Power Supply Selection and
AC Connections ......................... 16
5
INSTALLATION RECORD ................. 17
1
1
INTRODUCTION
The instrument documentation is shown in Fig. 1.1. The Standard Manuals, including the
specification sheet, are supplied with all instruments. The Modbus Supplement is supplied with
instruments configured for Modbus Serial Communication.
This manual includes an Installation Record which should be completed as a log of the electrical
installation. The record is useful when carrying out initial instrument programming and can be
retained for future reference.
INSTALLATION
Product Identification
Siting
Mounting
Electrical Connections
Installation Record
OPERATION
PROGRAMMING
MODBUS (RTU).
Setting Up
Basic Config. Level
Serial Adaptors
Displays & Controls
Operating Level
Simple Fault-Finding
Advanced Config. Level
Serial Connections
Programming Page
MODBUS Registers
Standard Manuals
Fig. 1.1 Documentation
MODBUS Supplement
2
2
PREPARATION
2.1 Checking the Code Number – Fig. 2.1
XXXX / X X X X X X X X
Code Number Label
Fig. 2.1 Location of Code Number Label
3
3
MECHANICAL INSTALLATION
EC Directive 89/336/EEC
55°C
In order to meet the requirements of the
EC Directive 89/336/EEC for EMC
regulations, this product must not be used
in a non-industrial environment.
Max.
0°C
Min.
A – Within Temperature Limits
0 to 90% RH
3.1 Siting – Figs. 3.1 and 3.2
Minimum
Sensor
A – Close to Sensor
B – Within Humidity Limits
IP66/
NEMA4X
C – Within Protection Rating Limits
B – At Eye-level Location
+
C – Avoid Vibration
Caution. Select a location
away from strong electrical and
magnetic fields. If these cannot be
avoided, particularly in applications
where ‘walkie talkies’ are used,
connect using screened cables
within earthed metal conduit.
Fig. 3.1 General Requirements
D – Use Screened Cables
Fig. 3.2 Environmental Requirements
4
3
MECHANICAL INSTALLATION…
3.2 Mounting – Figs. 3.3 and 3.4
The instrument is designed for wall-/pipe-mounting – see Fig. 3.4. Overall dimensions are
shown in Fig. 3.3.
Dimensions in inches (mm)
1.65
2.68 (68)
(42)
6.3 (160)
8.43
(214)
9.13
(232)
9.84
(250)
Allowance for
Cable Bends
2.72 (69)
7.9 (200)
23/8 (61) O.D. Vertical or
Horizontal Post
Fixing Centres
Fixing Holes
(x3) 0.25 (6.5) Dia
Fig. 3.3 Overall Dimensions
Drill suitable
holes
2
1
Position ‘U’ bolts on pipe
2
Position plates over ‘U’ bolts
Pipe Mounting Kit
1
Mark fixing
centres
(see Fig. 3.3)
Secure plates
3
3
Fix instrument to
wall using
suitable fixing
4
Secure transmitter to mounting plate
Fig. 3.4 Wall-/Pipe-mounting Details
5
4
ELECTRICAL INSTALLATION
4.2 Setting
the
Input
Warning. Before making any
connections, ensure that the power
supply, any high voltage-operated control
circuits and high common mode voltages
are switched off.
Selector Links – Fig. 4.2A
Plug-in links on the microprocessor p.c.b. are
positioned according to the type of Process
Variable Input, Remote Set Point Input and
Valve Position Feedback Inputs used.
Note.
Remove the instrument front panel – see
Fig. 4.1, steps 1 to 6.
•
•
Always route signal leads and power
cables separately, preferably in
earthed metal conduit.
Referring to Fig. 4.2A, set the link positions
for the input type required.
It is strongly recommended that
screened cable is used for signal
inputs and relay connections. Connect
the screen to the ground stud.
4.3 Setting
the
Isolated
Output Link – Fig. 4.2B
A plug-in link (PL7) on the microprocessor
p.c.b. is positioned according to the isolated
Information. Use cable appropriate
for the load currents. The terminals accept
cables up 12AWG (2.5mm2).
output
required,
either
a
current
proportioning control output (programmable
in range 0 to 20mA) or a 12V logic output
(minimum load 400Ω). Referring to Fig. 4.2B
– steps 1 and 2, set the link for the output
type required.
4.1 Access to Terminals – Fig. 4.1
For access to terminals – refer to Fig. 4.1,
steps 1 to 3.
To use a 12V logic output, the control type
must be set to Time Proportioning Control –
see Fig. 3.1 of the Programming Guide.
Remove cap
and screw
5
Remove front
panel
6
1 slide
down
2Pull out
4 Remove front
slightly…
panel screws
2
3 Slacken captive screws and
…and
slide off
remove protection cover
Fig. 4.1 Access to Terminals and Processor Board
6
4
ELECTRICAL INSTALLATION…
Identify Link PL7
1
Set links for output type required
2
PL7
PL7
1
1
Logic Output
or
Analog Output
B – Isolated Output Types
PL1
PL2
PL3
Position
Feedback
Input
Process
Variable
Input
Remote
Set Point
Input
mA
R, mV,
THC & RTD
V
2-wire
Transmitter
Input
A – Input Types
Fig. 4.2 Setting the Selector Links
7
…4 ELECTRICAL INSTALLATION
4.4 Cable
and Conduit Fixings
Glands
4.4.2 Conduit
Adaptors
(N. American – 0.5in) – Fig. 4.4
4.4.1 Cable
(IEC – 20mm) – Fig. 4.3
Glands
Warning.
Rigid conduit must NOT be fitted to the
controller.
Controller adaptors must incorporate
a face seal.
Torque settings for the hubs and outer
nuts on the specified adaptors is 20ft.
lbs minimum, 25ft. lbs. maximum.
•
•
•
Information.
•
Suitable adaptors for controller
(mandatory for FM installations):
APPLETON
'O'-Ring
ST-50 PLUS STG-50 or STB-50
PLUS STG-50.
Reusable ONLY with replacement
ferrule STF-50.
O.Z. GEDNEY
4Q-50, 4Q50T or 4Q-50TG.
Alternative
Face Seal
Fig. 4.3 Cable Gland
(Supplied as standard)
Face
Seal
Hub
Seal
(Present
in O.Z.
Gedney
Fittings)
Ferrule
Outer Nut
Fig. 4.4 Conduit Adaptors
8
4
ELECTRICAL INSTALLATION…
4.4.3 Cable
Glands
(N. American – 0.5in) – Fig. 4.5
Warning.
•
•
•
Controller glands must be fitted with a
face seal.
Torque settings (hubs only) – 20ft. lbs
minimum, 25ft. lbs. maximum.
Outer nuts – hand tight plus a half turn
only.
Alternative
Face Seal
Information.
•
Suitable Cable Glands: (mandatory for
FM installations):
Face
Seal
O.Z. GEDNEY
Hub
SR-50-375 or SR-504
APPLETON
CG 3150 or CG-3150S (and STG-
50 sealing ring).
THOMAS & BETTS
2521.
When fitting cable glands to the
controller, start with an outer gland
and also temporarily fit a gland at the
opposite end, to aid location of the
transmitter gland plate. Fit and tighten
glands consecutively from initial
gland.
Fittings
vary
slightly
for
different
makes
Illustration
typical for
O.Z.Gedney
•
Outer Nut
Fig. 4.5 Cable Glands
9
…4 ELECTRICAL INSTALLATION
4.5 Connections Summary – Fig. 4.6
Information.
Input impedances:
Low voltage(mV) >10MΩ
Voltage >10MΩ
Current 10Ω.
Process Variable Input
Remote Set Point Input
Relay 1
Relay 2
Relay 3
9 10 11
Power
Supply
4
3
5
6
7
8
12 13 14 15 16 17
27 28 29 30 31 32
1
2
18 19 20 21 22 23 24 25 26
MODBUS (RTU)
(if option fitted)
Logic Input
Control Output
Position Feedback Input
Retransmission Output
Fig. 4.6 Terminal Block Identification
10
4
ELECTRICAL INSTALLATION…
Terminal Number
AC Supply
1
2
L
N
24V, 115V or 230V a.c.
– see Fig. 4.22
3
4
5
N/O
C
N/C
Relay 1 Output
– see Fig. 4.17
Motorized Valve Control Relay (open)
– see Fig. 4.19A
6
7
8
N/O
C
N/C
Relay 2 Output
– see Fig. 4.17
Motorized Valve Control Relay (close)
– see Fig. 4.19A
9
10
11
N/O
C
N/C
Relay 3 Output
– see Fig. 4.17
Alarm Relays
3rd lead/2-wire TX
Input 1+
Input 1–
12
13
14
Process Variable Input or 2-wire Tx Power Supply
– see Figs. 4.7 to 4.9,
– see Fig. 4.13
4.12 and 4.14
3rd lead
Input 2+
Input 2–
15
16
17
Remote Set Point Input – see Figs. 4.7 to 4.12 and 4.14
18
19
20
21
22
Tx+
Tx–
Common
Rx+
Rx–
RS 485 Modbus Serial Communications Option 1 only – see
Modbus (RTU) Communications Supplement
23
24
+
–
Retransmission Output/Cool Output – see Fig. 4.15
Current Proportioning Control Output/Heat Output Fig. 4.15
or 12V Logic Control Output Fig. 4.16
25
26
+
–
27
28
29
3rd lead
Input 3+
Input 3–
Position Feedback Input – see Figs. 4.18 , 4.19A and 4.19B
30
31
32
Logic Input 1 – see Figs. 4.20 and 4.21
Logic Input 2 – see Figs. 4.20 and 4.21
Common
Table 4.1 Electrical Connections
11
…4 ELECTRICAL INSTALLATION
4.6 Input Connections
Make connections to each input, as shown in Figs 4.4 to 4.14, first removing any factory-fitted
wire links not required.
4.6.1 Thermocouple (THC) Inputs – Fig. 4.7
Note. Automatic Cold Junction Compensation (ACJC) is active when an input is
programmed for use with thermocouples. Use the correct compensating cable between the
THC and the terminals – see Table 4.2.
If an external fixed cold junction is used, the connections to the instrument must be made
with copper cable. The input must be programmed for mV input signals and the appropriate
THC linearizer selected – see Sections 4.5 and 4.6 of the Programming Guide.
Compensating Cable
Type of
ANSI
DIN
BS4937
Part No.30
+ Green
– White
Case Green *
+ Pink
– White
Case Pink *
+ Orange
– White
Case Orange *
Thermocouple
Ni-Cr/Ni-Al (K)
Nicrisil/Nisil ( N)
Pt/Pt-Rh (R and S)
Cu/Cu-Ni (T)
BS1843
MC 96.1
+ Yellow
– Red
Case Yellow
+ Orange
– Red
Case Orange
+ Black
– Red
Case Green
+ Blue
– Red
43714
+ Red
– Green
+ Brown
– Blue
Case Red
+ Orange
– Blue
Case Orange
+ White
– Blue
Case Green
+ White
– Blue
Case Green
—
+ Red
– White
Case White
+ Red
– Brown
+ Brown
– White
Case Blue
Case Blue
Case Brown
Case Brown *
+ Yellow
– Blue
Case Black
+ White
– Red
Case Black
+ Red
– Blue
Case Blue
+ Black
– White
Case Black *
Fe/Con (J)
* Case Blue for intrinsically safe circuits
DIN 43710
+ Blue/red
– Blue
Fe/Con (DIN 43710)
—
—
—
Case Blue
Table 4.2 Thermocouple Compensating Cables
4.6.2 3-lead Resistance Thermometer (RTD) Inputs – Fig. 4.8
The three leads must have equal resistance, not exceeding 50Ω each.
4.6.3 2-lead Resistance Thermometer (RTD) Inputs – Fig. 4.9
If long leads are necessary it is preferable to use a 3-lead RTD. If the RTD is to be used in a
hazardous area a 3-lead RTD must be used.
4.6.4 Links for Unused Inputs
To reduce susceptibility to electro-magnetic interference, ensure that the three terminals on
each unused input are shorted together with sleeved wire links.
12
4
ELECTRICAL INSTALLATION…
Remote Set Point
Process Variable
% ^
@ £
Remote Set Point
Process Variable
&
$
%
@
^ &
£ $
Sleeved
Link
Sleeved
Link
+
–
–
Fig. 4.12 Current Input Connections
Fig. 4.7 Thermocouple Input Connections
@ £
$
Remote Set Point
Process Variable
% ^ &
@ £
$
–
Tx
Fig. 4.13 2-wire Transmitter
Power Supply Input Connections
Red
Red
White
Fig. 4.8 3-lead Resistance
Thermometer Input Connections
Remote Set Point
Process Variable
% ^
@ £
&
$
Remote Set Point
% ^ &
@ £ $
Process Variable
Sleeved
Link
–
Sleeved
Link
Fig. 4.14 Voltage Input Connections
Red
White
Fig. 4.9 2-lead Resistance
Thermometer Input Connections
Retransmission O/P
or 'Cool' Analogue O/P
in Heat/Cool
23 24
25 26
Remote Set Point
% ^
&
Current Proportioning
Control Output
–
Fig. 4.15 Current Proportioning Control
and Retransmission Output Connections
Fig. 4.10 3-lead Resistance
Remote Set Point Input Connections
25 26
% ^
Remote Set Point
&
12V Logic Output for ON/OFF
or Time-proportioning Control
Sleeved Link
–
Fig. 4.11 2-lead Resistance
Remote Set Point Input Connections
Fig. 4.16 Logic Control Output Connections
13
…4 ELECTRICAL INSTALLATION
4.7 Output Connections
Make connections as shown in Figs 4.15 and
4.16.
3
5
7
4
6
8
4.8 Relay Connections – Fig. 4.17
For relay functions refer to the following
table.
Motorized
100% 0%
Valve Drive
Valve
Positioner
Power
Relay 1
Relay 2
Relay 3
On/Off Control
Time Prop.(Heat)
Time Prop.(Cool)
Motorized Valve
Alarm
—
—
—
—
—
—
ꢀ
ꢀ
ꢀ
Supply
100%
0%
—
ꢀ
Open
ꢀ
Close
ꢀ
(N)
(L)
L
N
Link
Relay 3
Relay 2
Relay 1
9 0
6 7
3 4
!
8
5
27 28 29
A – Standard Feedback Slidewire
Configuration
27 28 29
Normally Open
Common
Normally Closed
Link
Fig. 4.17 Relay Connections
100%
0%
4.9 Motorized
Valve
Motorized Valve Drive
Connections – Figs. 4.18 and 4.19
B – Alternative Feedback Slidewire
27 28 29
Configuration
Note. Link must be connected
at the motorized valve drive
terminals and not the Controller
terminals.
Sleeved Link
–
Motorized Valve
Drive
Fig. 4.18 Motorized Valve Feedback
Connections (using V, I or mV feedback)
Fig. 4.19 Motorized Valve Connections
(using feedback slidewire)
14
4
ELECTRICAL INSTALLATION…
4.10 Logic Input Connections – Figs. 4.20 and 4.21
Each logic input can be programmed to perform one of a number of functions – see Section
3.10 of the Programming Guide.
Auto/
Manual
Local/Remote Dual Set Point
Alarm
Set Point
Selection
Selection
Acknowledgement
Selection
* Alarm
Acknowledge
Fixed Dual
Set Point 2
Automatic
Manual
Local
5V
Logic switching
0V
* Leading 'edge-triggered'
(minimum duration 200ms)
Fixed Dual
Set Point 1
Remote
or Dual
30 31 32
Automatic Local
Manual
Fixed Dual Set Point 2
Fixed Dual Set Point 1
Alarm Ack.
Remote (Dual)
Note. Only one function may be
performed by each input at any one time.
30
31
32
Logic Input 1
Logic Input 2
Common
Fig. 4.20 Standard Logic Input Functions
Hold
(Soak)
* Profile
Reset
* Skip
Segment
5V
Logic switching
0V
* Leading 'edge-triggered'
(minimum duration 200ms)
Start
Profile
30 31 32
P–Strt
P–rSEt
P–SKIP
Hold/ (Soak)
Start Profile
Profile Reset Skip Current Segment
30 Logic Input 1
Note. Only one function may be
performed by each input at any one time.
31
32
Logic Input 2
Common
Fig. 4.21 Additional Logic Input Functions for Profile Selection
15
…4 ELECTRICAL INSTALLATION
4.11 Power Supply Selection and AC Connections – Fig. 4.22
115V
115
1
Digit 7
Code Label
C31 x x xx x x x x x
2
230
3
Selector not Fitted (24V AC)
230V
A – Selecting the Supply Voltage
115
Information.
Fuse Rating - 5A Type T
Neutral
Line
Fuse
Remove plug to
make connection
Ground
B – Power Supply Connections
Fig. 4.22 Power Supply Selection and AC Connections
16
4
ELECTRICAL INSTALLATION…
Connection/Terminal Number
Power Supply (Tick Box)
L
1
230V AC
115V AC
24V AC
Power Supply
N
2
NO
C
3
Output Type:
Relay 1 Output
4
Output Function:
NC
NO
C
5
6
Output Type:
7
Relay 2 Output
Relay 3 Output
Output Function:
NC
NO
C
8
9
Output Type:
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Output Function:
NC
3rd
+
(Tick Box)
Link Positions
Process Variable
Input
–
mA mV/THC/RTD
mA mV/THC/RTD
V
2-wire Tx
Link Positions (Tick Box)
3rd
+
Remote Set Point
Input
–
V
Tx+
Tx–
Common
Rx+
Rx–
+
Termination Resistors(Tick Box)
Modbus Serial
Communications
Option 1 only
Linked-out
Linked-in
Output Type:
Retransmission
Output
Output Function:
–
17
…4 ELECTRICAL INSTALLATION
Connection/Terminal Number
Link Positions (Tick Box)
+
25
26
27
28
29
30
31
32
Control Output
–
Analog Output Logic Output
Link Positions (Tick Box)
3rd
+
Position Feedback
Input
–
mA
mV
V
R
Logic Input 1
Logic Input 2
Common
18
NOTES
19
…NOTES
20
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