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6. MESSAGES & ERROR INDICATIONS
Parameter
Upper
Lower
Display
Display
Configuration & Setup required. This screen is
seen at first turn on, or if hardware
Instrument
configuration has been changed. Press
parameters are in
!"#"* $"%&
enter the Configuration Mode, next press
default conditions
or
to enter the unlock code number,
then press
Process variable input > 5% over-range
Input Over Range
::
*
Normal
M
N
Input Under
Process variable input > 5% under-range
,,
*
Normal
M
N
Range
Input Sensor
Break detected in process variable input
'2=O*
Normal
Break
sensor or wiring
'(%.*
Option 1 module fault
Option 1 Error
Option 2 module fault
Option 2 Error
'(%0*
=<<*
'(%9*
Option 3 module fault
Option 3 Error
'(%?
Option A module fault
Option A Error
7. OPERATOR MODE
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.
Upper
Lower
Display Strategy and
Display
Display
When Visible
81+2 = =%?>*
PV and Limit Setpoint values
Limit SP
PV Value
Value
(initial screen)
81+2 = 81+?*
Limit Setpoint value
Limit SP
(Blank)
Value
(initial screen)
Highest PV value since this
parameter was last reset.
High Limit
$#), = :1
:1:8
To reset, press
for 5 seconds,
Hold
PPPP
display =
Lowest PV value since this
Low Limit
parameter was last reset.
,":8
$#), = ,"
To reset, press
for 5 seconds,
Hold
PPPP
display =
Accumulated time of Limit SP
Always available
Format mm.ss to 99.59
exceed conditions since this
Exceed Time
#1
then mmm.s
parameter was last reset.
Value
(10 sec increments)
To reset, press
for 5 seconds,
::
PPPP
M
N
Shows
if ≥999.9
display =
When one or more
L
Alarm 2 active
alarms are active.
Active Alarm
?,+#*
?%0.
Alarm 1 active
Status
ALM indicator
L
will also flash*
Annunciator active
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 re-
energise 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.
9. SPECIFICATIONS
UNIVERSAL INPUT
Description
Thermocouple
±0.1% of full range, ±1LSD (±1°C for Thermocouple CJC).
Calibration:
BS4937, NBS125 & IEC584.
±0.1% of full range, ±1LSD.
PT100 Calibration:
to
BS1904 & DIN43760 (0.00385
±0.1% of full range, ±1LSD.
DC Calibration:
Sampling Rate:
4 per second.
to proceed
Impedance:
>10MΩ resistive, except DC mA (5Ω) and V (47kΩ ).
Sensor Break
Thermocouple, RTD, 4 to 20 mA, 2 to 10V and 1 to 5V ranges
Detection:
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.
Isolation:
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):
Open(2 to 24VDC) = No Reset.
Closed(<0.8VDC) = Reset (edge triggered).
Isolation:
Reinforced safety isolation from inputs and other outputs.
OUTPUTS
Description
Limit Relay
Contact Type &
Latching limit control relay. Single pole double throw (SPDT);
Rating:
5A resistive at 120/240VAC. Slot 1 position fixed for this
Read only
function, optional function for Slot 2 & 3 relay modules,
Lifetime:
>100,000 operations at rated voltage/current.
Read only
Isolation:
Basic Isolation from universal input and SSR outputs.
Alarm Relays
Contact Type &
Slot 2 or 3 position non-latching alarm relay.
when reset
Rating:
Single pole double throw (SPDT); 2A resistive at 120/240VAC.
Lifetime:
>500,000 operations at rated voltage/current.
Isolation:
Basic Isolation from universal input and SSR outputs.
SSR Driver
when reset
Drive Capability:
SSR drive voltage >10V into 500Ω min.
Isolation:
Not isolated from universal input or other SSR driver outputs.
Triac
Operating Voltage:
20 to 280Vrms (47 to 63Hz).
when reset
Current Rating:
0.01 to 1A (full cycle rms on-state @ 25°C);
derates linearly above 40°C to 0.5A @ 80°C.
Isolation:
Reinforced safety isolation from inputs and other outputs.
DC
Resolution:
8 bits in 250mS (10 bits in 1s typical, >10 bits in >1s typical).
Isolation:
Reinforced safety isolation from inputs and other outputs.
Transmitter PSU
Power Rating:
20 to 28V DC (24V nominal) into 910Ω minimum resistance.
Isolation:
Reinforced safety isolation from inputs and other outputs.
SERIAL COMMUNICATIONS
Physical:
RS485, at 1200, 2400, 4800, 9600 or 19200 bps.
Protocols:
Selectable between Modbus and ASCII.
Isolation:
Reinforced safety isolation from all inputs and outputs.
OPERATING CONDITIONS (FOR INDOOR USE)
Ambient
0°C to 55°C (Operating), –20°C to 80°C (Storage).
Temperature:
Relative Humidity:
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:
Complies with EN61326 (Susceptibility & Emissions).
Safety
Complies with EN61010-1 & UL3121.
Considerations:
Pollution Degree 2, Installation Category II.
Front Panel Sealing: To IP66 (IP20 behind the panel).
PHYSICAL
Front Bezel Size:
48 x 48mm
Depth Behind Panel: 110mm.
Weight:
0.21kg maximum.
Ω
Ω
/
/°C).
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