KEYENCE KV-TF40 PID Temperature Adjustment Unit (Multi-input 4-channel)

Type

Multi-input PID temperature control unit

Memory elements

EEPROM rewritable one million times

Number of temperature input points

4 ch

Input

Thermocouple/Platinum temperature measuring resistor^*1

Temperature sensor types

Thermocouple: K, J, T, E, R, B, N, S, W5Re/W26Re
Platinum temperature measuring resistor: JPt100, Pt100

Indicated accuracy

±0.3 % of F.S. ±1 digit (+25 °C), ±0.7 % of F.S. ±1 digit (0 to +50 °C)

Cold junction correction precision

±1 °C

Sampling period

125 ms/ch (500 ms/4 ch)

Control period

1 to 100 sec.

Operating mode

PID control (with auto-tuning and 3 mode stabiliser function installed)
Heat/cool PID control (with auto-tuning and 3 mode stabiliser function installed)
ON/OFF control

Tuning mode

PID auto-tuning mode

Control output

transistor (sink)

Alarm output

transistor (sink)^*2

Alarm mode

Absolute value upper limit, absolute value lower limit, deviation upper limit, deviation lower limit,
deviation upper limit unexcited, deviation lower limit unexcited, deviation upper and lower limits,
within upper and lower limit deviation, absolute value upper limit unexcited, absolute value lower limit unexcited^*3

Output

Rated load

30 VDC 100 mA or less

Leak current at OFF

100 µA or less

Residual voltage at ON

1.5 V or less

Current sensor (CT) input

4 ch^*4

Current measurement precision

Larger of ±5 % of an input value and ±2 A of an input value

Insulation mode

Between inputs and outputs: Photocoupler and transformer insulation,
Between input channels: Photocoupler and transformer insulation

Other functions

Heater wire breaking alarm, control loop wire breaking alarm, measured value bias,
output limit, slope setup, manual reset, output control when an error occurs

Internal current consumption

210 mA or less

Weight

Approx. 270 g

^*1 Can be set for each channel.
^*2 Because the alarm output is used as cooling control output when heat/cool control is used, the alarm output cannot be used as an alarm output function.
^*3 Standby operation ON/OFF can be selected in each alarm mode.
^*4 Use a KEYENCE sensor (OP-6694). (Sold separately.)