Leeds & Northrup Controllers

Dimensions 1/8 Din ( 48 x 96 x116 )

Relay or SSR output selectable jumper

Up to 3 independent alarms programmable as process alarms, band alarm or deviation alarm

Readout programmable from -1999 to 3999 (for linear outputs only)

Case
PC/abs black

Self extinguishing degree
V-0 according to UL, VDE and CSA

Dimensions
48 x 96 mm (according to DIN 43700); depth 116 mm

Weight
400 g max

Power supply
(switching mode) from 100 to 240 VAC 50/60 Hz (± 10% of the nominal value)

In addition to the standard outputs, another optional output is available to perform alarm 3 output functions.

Alarm indications:
3 LED indicator show when their respective alarm is ON.

Alarm outputs:
# relay SPST. Contact rated at 2 A, 250 VAC on resistive load

°C
Lit when the process variable is shown in degrees Celsius

°F
Lit when the process variable is shown id degrees Fahrenheit

SMRT
Flashing when the first part of the SMART algorithm is active. Lit when the second part of the SMART algorithm is active

OUT1
Lit when OUT1 is ON

OUT2
Lit when OUT2 is ON or alarm 1 is on

OUT3
Lit when alarm 2 is on; Flashing slowly when the heater breakdown alarm is on;Flashing quickly when the heater breakdown alarm and alarm 2 are both on

OUT 4
Lit when alarm 3 is on

SP2
Lit when SP2 is used

MAN
Lit when controller is in MANUAL mode

Front Panels:
IP 54 front protection according to IEC 529 CEI 70-1)

Installation:
Panel mounting with tie rods. Controller held in case with safety screw (TC 8).,

Rear terminal board:
With screw terminals, connection diagram and safety rear cover

Power consumption:
8 VA

Insulation resistance:
>100 MW (IEC 348)

Isolation voltage:
1500 V rms (IEC 348)

Common mode rejection ratio:
120 dB 0/60 Hz

Normal mode rejection ratio:
60 dB 0/60 Hz

Noise rejection:
High frequency electromagnetic
noises: (IEC 801-4 level 3)
Electric discharge: 8 kV (IEC 801-2

D/A conversion:
Dual slope integration

Sampling time:
For linear inputs: 250 ms
For TC or RTD inputs 500 ms

Accuracy:
+0.2% f.s.v. @ 25°C and nominal power supply voltage

Operating temperature:
0 to +50°C

Storage temperature:
-20 to +70°C

Humidity:
From 20 % to *5% RH not condensing

Protections:
WATCHDOG
for automatic reset

DIP SWITCHES
for configuration and calibration parameter

Type:
J, K, L, R, S and N are key board programmable

Engineering unit:
°C and °F keyboard programmable

Burnout:
Detection of input open (wires or sensor) with underrange or overrange selectable

Cold junction:
Automatic compensation for an ambient temperature between 0 and 50°C

Cold junction compensation error:
0.1 °C/°C

Input impedance:
>1 MW

Calibration:
according to IEC 584-1

TC Type

Range

TC Type

Range

RTD type:
Pt 100 3 wires connection

Calibration:
according to DIN 43760

Line resistance:
Max 20 W/wire with no appreciable error

Engineering unit:
°C and °F keyboard programmable

Burnout:
Detection of sensor open and of one or more wires open. Detection of sensor short-circuit.

Standard Range Table

mA input (standard):
0-20 mA and 4-20 mA keyboard programmable
Input impedance: <5 W

V input:
-5 V and 1-5 V programmable.

Input impedance:
>200 kW
0-10 V and 2-10 V programmable.

Input impedance:
>400 kW
0-60 mV and 12-60 mV programmable.
Input impedance: > 1 MW

Readout:
keyboard programmable
from -1999 to 4000

Decimal point:
programmable in any point

Algorithm:
PID + SMART

Type:
One (heating)or two (heating/cooling) control outputs

Proportional band:
Programmable:
* From 1% to 100% of the input span for processes with one control output
* From 1.5% to 100% of the input span for processes with two control outputs
By setting a PB equal to 0, the control action becomes ON/OFF.

Hysteresis (for ON/OFF control action):
Programmable from 0.1% to 10% of the input span.

Integral time:
Programmable from 20 seconds to 20 minutes or excluded

Derivative time:
Programmable from 1 second to 10 minutes or excluded

Integral preload:
Programmable:
* For one control output, from 1 to 100 % of the output range
* For two control outputs, from-100% to +100% of the heating/cooling output range

Out 1 (heating) cycle time:
From 1 second to 200 seconds

AUTO/MANUAL mode:
Selectable by front push button or logic input

AUTO/MANUAL transfer:
Bumpless method type

Two control outputs
(heating/cooling)
Relative cooling gain:
Keyboard programmable from 0.20 to 1.

Cooling cycle time:
From 1 second to 200 seconds

Overlap/dead band:
Keyboard programmable from -20% (dead band) to +50% (overlap) of the proportional band

Type:
Time proportioning

Direct/reverse action:
Keyboard programmable

Output level indication:
Output 1 (heating) and output 2 (cooling) levels are displayed separately

Output status indication:
Two LED indicators (OUT 1 an OUT 2) are lit when their respective output is in ON state

Output level limiter:
* For one control medium:
   from 0 to 100% of the output span
* For two control media:
from -100 to +100% of the main (heating) output span
This function may be active at instrument start-up for a programmable time (to avoidthermal shock and/or preheat the plant).

Relay Outputs

Output cycle time:
Programmable from 1 s to 99 s

Output 1 (heating):
SPDT contact with rated current 3 A at 250 VAC on resistive load

Output 2 (cooling):
Contact with rated current 2 A at 250 VAC on resistive load

Logic voltage for SSR driver (output 1 only):
Logic level 0: V out
<0.5 VDC
Logic level 1:
14 VDC ±20% @ 17 mA max.
24 VDC ±20% @ 1 mA max.

Output safety value:
When the instrument temperature controller detects an out of range or burn out condition,it can force the output to programmed safety value.

Output action:
Direct or reverse function programmable

Alarm functions:
Each alarm can be configured as a process alarm or deviation alarm

Alarm reset:
Automatic or manual reset programmable on each alarm

Alarm masking:
Each alarm can be configured as masked alarm or standard alarm. This function eliminates false indication at instrument start-up and after set point change.

Threshold:
Programmable in engineering units within the entire range

Hysteresis:
Programmable from 0.1% to 10% of the input span

Band alarm
Operational mode:
Inside or outside bang programmable

Threshold:
Programmable from 0 to 500 units

Hysteresis:
Programmable from 0.1% to 10% of the input span

Threshold:
Programmable from -500 to +500 units

Hysteresis:
Programmable from 0.1% to 10% of the input span

Heater breakdown alarm:
Can be utilized only for temperature controllers with current transformer input option.

Type:
Low alarm

Threshold:
Programmable in engineering units within the readout span

Upper display

• Shows the actual measured
  value or the selected parameter
  value.

Lower display shows:

• the operative set point
• the output level
• the heater consumption (in Ampere)
• the abbreviated name of the
  selected parameter

Up to 2 independent alarms programmable as process
alarm, band alarm or deviation alarm

Configured by front keyboard

Case
PC/abs black

Self extinguishing degree:
V~0 according to UL~94

Dimensions
48 x 48 mm (according to DIN 43700); depth 122 mm

Weight
250 g max

Power supply
(switching mode) from 100 to 240 VAC 50/60 Hz (+10% to -15% of the nominal value)

This temperature controller can be equipped with 2 independent  outputs programmable as:

• Heating + alarm 1
• Heating + cooling

An optional output is available to perform alarm 2 and/or the HBD alarm output.

Alarm indications:
2 indicators show when their respective alarm is ON

Alarm outputs:
2 relay SPST. Contact rated at 2 A, 250 VAC on resistive load.

SP2
Flashing slowly when SP2 is used.

SMRT
Lit or flashing (according to the different self-tuning phases) when the smart function is operative

MAN
3rd decimal point is lit when
the controller operates in the manual mode

°C/°F
When the input sensor uses a TC or an RTD, one of these indicator is lit to show the selected engineering units

OUT1
Lit when the main output is ON

OUT2
Lit when:

• The out 2 is used as cooling output and is on
• The out 2 is programmed as an alarm and the controller detects an alarm condition or the alarm has not been reset

OUT3
Lit when alarm 2 is on.

Flashing slowly when the heater current is lower than the programmed threshold (HBD).

Flashing quickly when the HBD alarm and alarm 2 are simultaneously on

• IP 543 front protection
• SMART function for self-tuning of control parameters
• Proprietary algorithm for heating/cooling control with automatic setting of control parameters according to the cooling media (air, oil or water)
• Dual 4-digit LED display
• Universal input (6TC types, RTD, mV, mA, 5Vand 10V all calibrated)
• Independent alarms  programmable as process alarm, band alarm or deviation alarm
• Automatic or manual alarm reset
• Alarm masking during start-up or set-point change
• Manual control mode
• 2 programmable set points (main and auxiliary)
• 2 independent ramps (up and down ramps) for set point changes
• Logic input for set point selection
• Switching power supply (100 to 240 VAC)
• Soft start (time out output limiter)
• Output power limit on maximum if rise function
• Output "turn off" function

Auto-Tuning and self-Tuning Function
Leeds&Northrup's temperature controllers are equipped with a propierary self-tuning algorithm named SMART. SMART continuously monitors the process variable and auto matically adjusts the P.I.D. parameters according to the process variable's response. As a result, no artificial changes need to be injected into the system.

During start-up the SMART function implements auto-tuning, calculating the value of the P.I.D. parameters to optimize the set point approach. During control SMART implements self-tuning, updating the P.I.D. parameters according to the type of response due to a set point change as load change

Soft Start
To increase heater life and avoid thermal shock, a soft start function allows for gradual preheating of the controlled process. Soft Start is activated simply by programming the power output to be used during preheating and its duration.The alarm masking function assures that no false indication will occur during preheating. To ensure that the process always operates within safe conditions, the Soft Start function can be transformed into a continuous power output limiting function (infinite duration). The output power maximum rate can be also programmed, to avoid thermal shock during operation.

Two independent ramps (up and down) for set point changes
Some processes require a ramp to reach a new setpoint value. The new setpoint may require different rates of rise. For example, a process may need a fast heating period and slow cooling period. Leeds&Northrup's temperature controllers allow you to program ramps to both increase and decrease to new set point values.

NOTE: These two independent ramps can also be applied to the SP-SP2 transfer.

OFFSET on the measured value
In many applications, it is difficult to locate the sensor in the ideal position. Incorrect sensor positioning may produce a measured value that is not a true representation of the process value. Leeds&Northrup's temperature controllers allow for programming of a continuous offset, to ensure that the measured value reflects the true value of the process.

TC8
087650
TC8 Temperature Controller
1/8 DIN size controller with universal analog input, SMART self-tuning, 1 time proportioning or ON/OFF relay type or SSR type control output, 2nd relay type output for alarming or cooling control, 3rd relay output for alarm 2, and a digital input to select SP/SP2.

087651
TC8 Temperature controller
1/8 DIN size controller with universal analog input, SMART self-tuning, 1 time proportioning or ON/OFF relay type or SSR type control output,2nd relay type output for alarm 1 or cooling control, 3rd relay output for alarm 2, a digital input to select SP/SP2, a 4th relay output for alarm 3 and an input for heater breakdown detection.

TC16
087660
TC16 Temerature Controller
1/16 DIN size controller with universal analog input, SMART self-tuning, 1 time proportioning or ON/OFF relay type control output, 2nd relay type output for alarm 1 or cooling control and a 3rd relay output for alarm 2.

087661
TC16 Temperature Controller
1/16 DIN size controller with universal analog input, SMART self-tuning, 1 time proportioning or ON/OFF relay type control output, 2nd relay type output for alarm 1 or cooling control, 3rd relay output for alarm 2, and a digital input to select SP/SP2 or heater breakdown detection.

087662
TC16 Temerature Controller
1/16 DIN size controller with universal analog input, SMART self-tuning, 1 time proportioning or ON/OFF SSR type control output, 2nd relay type output for alarm 1 or cooling control, 3rd relay outpur for alarm 2, and a digital input to select SP/SP2 or heater breakdown detection.