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1 GENERAL DESCRIPTION
1.1 Features
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The Q64TC has the following features.
(1) Optimum temperature adjustment control (PID control)
(a) The Q64TC exercises temperature adjustment control automatically by
merely setting the PID constants (proportional band (P), integral time (I),
derivative time (D)) and temperature set value (set value: SV) necessary for
PID operations.
Therefore, no special instructions are needed to perform PID control.
(b) Using the auto tuning function enables the PID constants to be set
automatically by the Q64TC.
Hence, you can use the equipment without being conscious of cumbersome
PID operation expressions to find the PID constants.
(2) 4 loops on 1 module
The module provides a maximum of four loops at the same time for temperature
adjustment control.
(3) RFB limiter function
The RFB (Reset FeedBack) limiter suppresses overshooting which is liable to
occur at a startup or when a temperature set value (SV) is increased.
(4) Sensor compensation function
By setting a sensor compensation value, the sensor compensation function
eliminates a difference between a temperature process value (PV) and an actual
temperature, if any.
(5) Connection of thermocouples compatible with JIS, IEC, NBS,
ASTM and DIN Standards
(a) The Q64TCTT(BW) accepts the following thermocouples compatible with the
JIS, IEC, NBS, ASTM and DIN Standards.
• JIS Standards : R, K, J, S, B, E, T • IEC Standards: R, K, J, S, B, E, T, N
• NBS Standards : PL II
• DIN Standards : U, L
(b) The Q64TCTT(BW) allows you to set the temperature measurement ranges
which meet the operating temperatures of the above thermocouples.
(6) Connection of Pt100 and JPt100 platinum temperature-measuring
resistors
The Q64TCTT(BW) allows you to set the temperature measurement ranges
which meet the operating temperatures of the Pt100 and JPt100.
• ASTM Standards: W5re, W23re
MELSEC-Q
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