1
/16 - 1/8 - 1/4 DIN LIMIT CONTROLLERS
CONCISE PRODUCT MANUAL (59333-2)
CAUTION: Installation should be only performed by
technically competent personnel. Local Regulations
regarding electrical installation & safety must be observed.
Panel-Mounting
Installing Option Modules
1
/16 Din Size Instruments
Mounting Panel
Instrument
Housing
Tolerance +0.5, -0.0mm
Ratchets
Hold instrument firmly in
position (apply pressure
to bezel only)
Mounting Struts
Option Module A
Option Module 1
A
Slide mounting clamp
over the instrument
housing towards rear face
of mounting panel until
the tongues engage in
ratchets and instrument is
clamped in position.
Gasket
CPU PCB
B
For n multiple instruments mounted side-by-side, cut-out
A is 48n-4mm (1/16 & 1/8 Din) or 96n-4mm (1/4 Din)
1. INSTALLATION
The models covered by this manual have three different DIN case sizes (refer to
section 9). Some installation details vary between models. These differences have
been clearly shown.
Note: The functions described in sections 2 thru 8 are common to all models.
(Fixed Limit Relay)
CAUTION: Do not remove the panel gasket; it is a seal against dust and
moisture.
Option Module 3
Option Module 2
Rear Terminal Wiring
PSU PCB
USE COPPER CONDUCTORS (EXCEPT FOR T/C INPUT)
Single Strand wire gauge: Max 1.2mm (18SWG)
/8 & 1/4 Din Size Instruments
1
CPU PCB
1
/16 Din Size Instruments
Option Module B
Option Module A
Option Module 2
Option Module 3
Option Module 1
PSU PCB
(Fixed Limit Relay)
To access module A, first detach the PSU and CPU boards from the front by lifting
first the upper, and then lower mounting struts. Gently separate the boards.
a.
Plug the required option modules into the correct connectors, as shown below.
b.
Locate the module tongues in the corresponding slot on the opposite board.
c.
Hold the main boards together while relocating back on the mounting struts.
d.
Replace the instrument by aligning the CPU and PSU boards with their guides
in the housing, then slowly push the instrument back into position.
Note: Option modules are automatically detected at power up.
Option Module Connectors
1
/16 Din Size Instruments
1
1
/8 & /4 Din Size Instruments
Option Slot A
Connectors
PL5 & PL6
Option Slot 1
(Fixed Limit
Relay)
Option Slot 2
Connector
PL4A
Option Slot 3
Connector
PL4B
1
1
/8 & /4 Din Size Instruments
Option Slot B
(not used on
Limit Controllers)
Option Slot 2
Connector
PL4A
Option Slot 1
(Fixed Limit
Relay)
These diagrams show all possible option combinations. The actual
connections required depends on the exact model and options fitted.
Option Slot A
Connectors
PL5 & PL6
Option Slot 3
Connector
PL4B
Select mode is used to access the configuration and operation menu functions.
It can be accessed at any time by holding down
and pressing
.
In select mode, press
or
to choose the required mode, press
to enter.
An unlock code is required to prevent unauthorised entry to Configuration, & Setup
modes. Press
or
to enter the unlock code, then press
to proceed.
Mode
Upper
Display
CAUTION: Check information label on housing for correct operating
voltage before connecting supply to Power Input
Fuse: 100 – 240V ac – 1amp anti-surge
24/48V ac/dc – 315mA anti-surge
Note: At first power-up the message
is displayed, as described in
section 6 of this manual. Access to other menus is denied until configuration
mode is completed
Lower
Display
Description
Operator
Normal operation
Set Up
Configuration
Default
Unlock
Codes
None
Tailor settings to the application
Configure the instrument for use
Lower Upper Adjustment range & Description
Display Display
Alarm 2 Type*
High Alarm 2
value*
Low Alarm 2
value*
Band Alarm 2
value*
Dev. Alarm 2
Value*
Alarm 2
Hysteresis*
Range Min
Options as for alarm 1
!
Mm
"
3. CONFIGURATION MODE
First select Configuration mode from Select mode (refer to section 2).
Press
to scroll through the parameters, then press
or
to set the required
value. Press
to accept the change, otherwise parameter will revert to previous
value. To exit from Configuration mode, hold down
and press
, to return to
Select mode.
Note: Parameters displayed depends on how instrument has been configured.
Refer to user guide (available from your supplier) for further details.
Parameters marked * are repeated in Setup Mode.
Parameter
Lower Upper Adjustment range & Description
Display Display
Input Type &
Range
Linear Output 2
Range
!
Code Input Type &
Range
bC
B: 100 - 1824 ºC
L.C
L: 0.0 - 537.7 ºC
bF
B: 211 - 3315 ºF
L.F
L: 32.0 - 999.9 ºF
CC
C: 0 - 2320 ºC
NC
N: 0 - 1399 ºC
PTC Pt100: –199 - 800 ºC
CF
C: 32 - 4208 ºF
NF
N: 32 - 2551 ºF
PtF Pt100: –328 - 1472 ºF
JC
J: –200 - 1200 ºC
rC
R: 0 - 1759 ºC
Pt.C Pt100: –128.8 - 537.7 ºC
JF
J: –328 - 2192 ºF
rF
R: 32 - 3198 ºF
Pt.F Pt100: –199.9 - 999.9 ºF
j.C
J: –128.8 - 537.7 ºC
SC
S: 0 - 1762 ºC
0 - 20 mA DC
j.F
J: –199.9 - 999.9 ºF
SF
S: 32 - 3204 ºF
4 - 20 mA DC
KC
K: –240 - 1373 ºC
tC
T: –240 - 400 ºC
0 - 50 mV DC
PtRh20% vs 40%:
P24F 32 - 3362 ºF
KF
K: –400 - 2503 ºF
tF
T: –400 - 752 ºF
k.C
K: –128.8 - 537.7 ºC
t.C
T: –128.8 - 400.0 ºC
0 - 5 V DC
K.F
K: –199.9 - 999.9 ºF
t.F
T: –199.9 - 752.0 ºF
1 - 5 V DC
LC
L: 0 - 762 ºC
LF
L: 32 - 1403 ºF
PtRh20% vs. 40%:
P24C 0 - 1850 ºC
#
Default
Value
See following table for possible codes
Code
Output 2 Usage
.
10 - 50 mV DC
0 - 10 V DC
Retransmit
Output 2 Scale
maximum
Retransmit
Output 3 Scale
minimum
Output 3 Usage
Linear Output 3
Range
Retransmit
Output 3 Scale
maximum
Retransmit
Output 3 Scale
minimum
Display Strategy
#
Limit Output Relay
Alarm 1, Direct
Alarm 1, Reverse
Alarm 2, Direct
Alarm 2, Reverse
Logical Alarm 1 OR 2, Direct
Logical Alarm 1 OR 2, Reverse
Logical Alarm 1 AND 2, Direct
Logical Alarm 1 AND 2, Reverse
Limit Annunciator, Direct
Limit Annunciator, Reverse
Retransmit Limit SP Output
Retransmit PV Output
0 to 5 V DC output 1
0 to 10 V DC output
2 to 10 V DC output
0 to 20 mA DC output
4 to 20 mA DC output
-1999 to 9999
(display value at which output
will be maximum)
-1999 to 9999
(display value at which output
will be minimum)
As for output 2
!
-1999 to 9999
(display value at which output
will be maximum)
-1999 to 9999
(display value at which output
will be minimum)
PV is visible in Operator mode
PV not visible in Operator mode
$
.
Displays
in Operator mode
when Limit Output is not active
ASCII
Modbus with no parity
Modbus with Even Parity
Modbus with Odd Parity
1.2 kbps
.
2.4 kbps
%
Serial
Communications
Protocol
Mm
Mm
Mm
Serial
Communications
Bit Rate
Comms Address
.&
&
4.8 kbps
'.(
(
9.6 kbps
'.
'
19.2 kbps
1 to 255 (Modbus), 1 to 99 (ASCII)
Read/Write
Ww
Read only
Comms Write
Configuration
Lock Code
"
Range max
Range min
"
As for output 2
2 - 10 V DC
Note: Decimal point shown in table indicates temperature resolution of 0.1°
Parameter
Lower Upper Adjustment range & Description
Default
Display Display
Value
Range max
Scale Range Lower Limit +100
Scale Range
to Range Maximum
(Lin=1000)
Upper Limit
Range min
Range Minimum to
Scale Range
(Linear=0)
Scale Range Upper Limit -100
Lower Limit
Decimal point
=XXXX, =XXX.X, =XX.XX, =X.XXX
position
(non-temperature ranges only)
Process Variable
±Span of controller
Offset
(see CAUTION note at end of section)
High Limit.
Limit relay is energised when
process “safe” (PV < Limit Setpoint)
Limit Action
Low Limit.
Limit relay is energised when
process “safe” (PV > Limit Setpoint)
Setpoint Upper
Current Setpoint to Scale Range maximum
R/max
Limit
Setpoint Lower
Scale Range minimum to Current Setpoint
R/min
Limit
Process High Alarm
Process Low Alarm
Alarm 1Type
Deviation Alarm
Band Alarm
No alarm
High Alarm 1
Range Max
value*
Scaled Range Minimum to
scaled Range Maximum in display units
Low Alarm 1
Range Min
value*
Band Alarm 1
1 LSD to span from setpoint in display units
value*
Dev. Alarm 1
+/- Span from setpoint in display units
value*
Alarm 1
1 LSD to full span in display units
!
Hysteresis*
Default
Value
Range Max
Product Info
Check manufacturing information
None
Note: The instrument will always return automatically to Operator mode if
there is no key activity for 2 minutes.
Input
Range/Type
Code Input Type &
Range
Mounting Struts
(not used on Limit
Controllers)
Parameter
2. SELECT MODE
The mounting panel must be rigid, and may be up to
6.0mm (0.25inch) thick. Cut-out sizes are:
Cut-Out Dim A
Cut-Out Dim B
1
1
/16 & 1/8 Din = 45mm
/16 Din = 45mm
1
1
/4 Din = 92mm
/8 & 1/4 Din = 92mm
)
Range max
Range min
Mm
.&
&
Ww
0 to 9999
Notes: Output 1 is always a Latching Limit Relay output.
If Option Slot A has the Digital Input module fitted, this always functions as a
Remote Reset, duplicating the function of the Reset) key
.
As these functions cannot be changed, no Configuration menus are required.
CAUTION: Process Variable Offset can be used to modify the
measured value to compensate for probe errors. Positive values
increase the reading, negative values are subtracted. This parameter
is effectively, a calibration adjustment and MUST be used with care.
There is no front panel indication of when this parameter is in use.
4. SETUP MODE
Parameter
Lower
Display
Upper Display Adjustment
Range & Description
Default
Value
R/max if
=
R/min if
=
Scaled Range Minimum to
scaled Range Maximum
Limit Setpoint value
*
Limit Hysteresis
Input Filter Time Constant
High Alarm 1 value
Low Alarm 1 value
1 LSD to full span in display units,
on the safe side of the limit SP
OFF or 0.5 to 100.0 secs
(see CAUTION note below)
Scaled Range Minimum to
scaled Range Maximum
!
Alarm 1 Hysteresis
High Alarm 2 value
R/min
Low Alarm 2 value
R/max
R/min
1 LSD to full span in display units
!
Setup Lock Code
0 to 9999
)
Note: Operator mode screens follow, without exiting from Setup mode.
Alarm 2 Hysteresis
CAUTION: An excessively large filter time could significantly delay
detection of a limit condition. Set this value to the minimum required
to remove noise from the process variable
5. PRODUCT INFORMATION MODE
First select Product information mode from Select mode (refer to section 2).
Press
to view each parameter. To exit from Product Information mode,
hold down
and press
to return to Select mode.
Note: These parameters are all read only.
Input type
Lower
Display
%
Upper
Display
#
Option 1 type (fixed)
Option 2 module type
fitted
Description
Input Under
Range
-
*
Latching Limit Relay
No option fitted
*
Relay output
SSR drive output
Triac output
*
-
Relay output
SSR drive output
Firmware type
Firmware issue
Product Revision Level
Date of manufacture
Serial number 1
Transmitter power supply
No option fitted
Auxiliary Option A
module type fitted
&
+,
%$$
Mm
.
Normal
Configuration & Setup required. This screen is
seen at first turn on, or if hardware
configuration has been changed. Press
to
enter the Configuration Mode, next press
or
to enter the unlock code number,
then press
to proceed
Process variable input > 5% over-range
Normal
-
.
Normal
-
as above if Display Strategy =
Process variable input > 5% under-range
.
Option 1 Error
as above if Display Strategy =
Break detected in process variable input
sensor or wiring
as above if Display Strategy =
Option 1 module fault
Option 2 Error
Option 3 Error
Option 2 module fault
Option 3 module fault
Option A Error
Option A module fault
Option B not used on Limit Controllers
this error is shown if any module is fitted
/ Normal
/
Normal
7. OPERATOR MODE
RS485 communications
Digital Input for remote reset
Value displayed is firmware type number
Value displayed is firmware issue number
Value displayed is Product Revision level
Manufacturing date code (mmyy)
First four digits of serial number
Serial number 2
Middle four digits of serial number
Serial number 3
Last four digits of serial number
UNIVERSAL INPUT
Thermocouple
Calibration:
PT100 Calibration:
DC Calibration:
Sampling Rate:
Impedance:
Sensor Break
Detection:
Isolation:
±0.1% of full range, ±1LSD (±1°C for Thermocouple CJC).
BS4937, NBS125 & IEC584.
±0.1% of full range, ±1LSD.
BS1904 & DIN43760 (0.00385Ω/Ω/°C).
±0.1% of full range, ±1LSD.
4 per second.
>10MΩ resistive, except DC mA (5Ω) and V (47kΩ ).
Thermocouple, RTD, 4 to 20 mA, 2 to 10V and 1 to 5V ranges
only. Limit outputs turn off (goes into Exceed condition), high
alarms activate for thermocouple/RTD sensor break, low
alarms activate for mA/V DC sensor break.
Isolated from all outputs (except SSR driver).
Universal input must not be connected to operator accessible
circuits if relay outputs are connected to a hazardous voltage
source. Supplementary insulation or input grounding would
then be required.
DIGITAL INPUT
Volt-free(or TTL):
Isolation:
Open(2 to 24VDC) =No Reset.
Closed(<0.8VDC) = Reset (edge triggered).
Reinforced safety isolation from inputs and other outputs.
OUTPUTS
This mode is entered at power on, or accessed from Select mode (see section 2).
Note: All Configuration mode and Setup mode parameters must be set as
required before starting normal operations.
Press
to scroll through the parameters.
Limit Relay
Contact Type &
Rating:
Upper
Display
Lifetime:
Latching limit control relay. Single pole double throw (SPDT);
5A resistive at 120/240VAC. Slot 1 position fixed for this
function, optional function for Slot 2 & 3 relay modules,
>100,000 operations at rated voltage/current.
Isolation:
Basic Isolation from universal input and SSR outputs.
Alarm Relays
Contact Type &
Rating:
Lifetime:
Isolation:
Slot 2 or 3 position non-latching alarm relay.
Single pole double throw (SPDT); 2A resistive at 120/240VAC.
>500,000 operations at rated voltage/current.
Basic Isolation from universal input and SSR outputs.
PV Value
Limit SP
Value
or
Lower Display Strategy and
Display
When Visible
Limit SP
=
Value
(initial screen)
=
(Blank)
(initial screen)
(Blank)
or PV
Value
High Limit
Hold
Low Limit
Hold
Exceed Time
Value
Active Alarm
Status
Linear DC voltage / current output
)
.
Normal
Universal input
Linear DC voltage / current output
No option fitted
Option 3 module type
fitted
Input Over Range
Description
Option B Error
±Span from SP in display units
1 LSD to span from setpoint
Deviation Alarm 2 Value
Band Alarm 2 value
Upper Lower
Display Display
Instrument
parameters are in
default conditions
.
R/max
1 LSD to full span in display units
Scaled Range Minimum to
scaled Range Maximum
Parameter
Input Sensor
Break
±Span from SP in display units
1 LSD to span from setpoint
Deviation Alarm 1 Value
Band Alarm 1 value
Parameter
9. SPECIFICATIONS
6. ERROR/FAULT INDICATIONS
Note: Configuration must be completed before adjusting Setup parameters.
First select Setup mode from Select mode (refer to section 2). The Setup LED
will light while in Setup mode. Press
to scroll through the parameters,
then press
or
to set the required value.
To exit from Setup mode, hold down
and press
to return to Select mode.
Note: Parameters displayed depends on how instrument has been configured.
=
.
(Initial Screen)
Description
PV and Limit Setpoint values
Read only
Limit Setpoint value
Read only
Displays
Output is active or
and PV if Limit
and blank
if not active.
Read only
Highest PV value since this
parameter was last reset.
=
To reset, press
for 5 seconds,
display = 0000 when reset
Lowest PV value since this
parameter was last reset.
=
To reset, press
for 5 seconds,
display = 0000 when reset
Accumulated time of Limit SP
Always available
exceed conditions since this
Format mm.ss to 99.59
parameter was last reset.
then mmm.s
(10 sec increments)
To reset, press
for 5 seconds,
Shows - . if 999.9
display = 0000 when reset
When one or more
L
Alarm 2 active
alarms are active.
Alarm 1 active
ALM indicator
L
Annunciator active
will also flash
Exceed Condition
An Exceed Condition is when the Process Variable exceeds the Limit Setpoint value
(i.e. PV > SP when set for high limit action, PV < SP for low limit action). The
LED is on during this condition, and is extinguished once it has passed.
Limit Output Function
Limit Output relay(s) de-energise whenever an Exceed condition occurs, causing
the process to shut down. The
LED is on when the relay is de-energised.
The relay remains latched off even if the Exceed condition is no longer present.
Only giving a reset instruction (after the exceed condition has passed) will reenergise the relay, allowing the process to continue. The
LED then turns off.
Limit Annunciator Outputs
An Annunciator output will activate when an Exceed condition occurs, and will
remain active until a reset instruction is received, or the Exceed condition has
passed. Unlike the Limit Output, an Annunciator can be reset even if the Exceed
condition is present. When an Annunciator is active, the
LED will flash and the
Alarm Status screen is available.
Resetting Limit Outputs & Annunciators
A reset instruction can be given by pressing the
key, via the Digital Input (if
fitted) or via a Comms command if an RS485 Communications module is fitted.
Annunciators will deactivate. Limit Outputs will only re-energise if the Exceed
condition has passed.
CAUTION: Ensure that the cause of the Exceed condition has been
rectified before resetting the Limit Output.
8. SERIAL COMMUNICATIONS
Refer to the full user guide (available from your supplier) for details.
SSR Driver
Drive Capability:
Isolation:
Triac
Operating Voltage:
Current Rating:
SSR drive voltage >10V into 500Ω min.
Not isolated from universal input or other SSR driver outputs.
Isolation:
20 to 280Vrms (47 to 63Hz).
0.01 to 1A (full cycle rms on-state @ 25°C);
derates linearly above 40°C to 0.5A @ 80°C.
Reinforced safety isolation from inputs and other outputs.
DC
Resolution:
Isolation:
8 bits in 250mS (10 bits in 1s typical, >10 bits in >1s typical).
Reinforced safety isolation from inputs and other outputs.
Transmitter PSU
Power Rating:
Isolation:
20 to 28V DC (24V nominal) into 910Ω minimum resistance.
Reinforced safety isolation from inputs and other outputs.
SERIAL COMMUNICATIONS
Physical:
RS485, at 1200, 2400, 4800, 9600 or 19200 bps.
Protocols:
Isolation:
Selectable between Modbus and West ASCII.
Reinforced safety isolation from all inputs and outputs.
OPERATING CONDITIONS (FOR INDOOR USE)
Ambient
Temperature:
Relative Humidity:
0°C to 55°C (Operating), –20°C to 80°C (Storage).
20% to 95% non-condensing.
Supply Voltage and 100 to 240VAC ±10%, 50/60Hz, 7.5VA
Power:
(for mains powered versions), or
20 to 48VAC 50/60Hz 7.5VA or 22 to 65VDC 5W
(for low voltage versions).
ENVIRONMENTAL
Standards:
CE, UL, ULC & FM 3545, 1998
EMI:
Safety
Considerations:
Front Panel Sealing:
Complies with EN61326 (Susceptibility & Emissions).
Complies with EN61010-1 & UL3121.
Pollution Degree 2, Installation Category II.
To IP66 (IP20 behind the panel).
PHYSICAL
/16 Din = 48 x 48mm, 1/8 Din = 96 x 48mm,
/4 Din = 96 x 96mm.
Depth Behind Panel: 1/16 Din = 110mm, , 1/8 & 1/4 Din = 100mm.
Weight:
0.21kg maximum.
Front Bezel Size:
1
1