YOKOGAWA UT55A User Manual

1-6
IM 05P01C31-01EN
PID Control
PID control is a general control using the PID control-related parameters.
► 8.2.1PIDControl
Alarms
Retransmission
output
Electric
furnace
UT55A/UT52A
4-20 mA DC
Thyristor
SCR
Recorder
TC
Heating/cooling Control
Heating/cooling control is available only for Heating/cooling type.
In Heating/cooling control, the controller outputs the result of control computation after
splitting it into heating-purpose and cooling-purpose signals.
► 8.2.3Heating/coolingControl
UT55A/UT52A
Cooling (relay signal)
Heating
(4-20 mA DC signal)
TC
Heating unit
Cooling
water
PV
Thyristor
SCR
Position Proportional Control
Position proportional control is available only for Position proportional type. It is used
exclusively for the motor-operated valve.
► 10.16AdjustingMotor-operatedValvePosition(PositionProportionalOutput)
TC
Furnace
UT55A/UT52A
Burner
Air
Gas
Motor-operated valve
Control motor
Position signal
H (direct) or L (reverse)
contact signal
1.3 Control Functions

YOKOGAWA UT55A Specifications

General

Brand	YOKOGAWA
Model	UT55A
Category	Temperature Controller
Language	English