YOKOGAWA UP55A User Manual

6-45
IM 05P02C41-01EN
Monitoring and Control of Regular Operations
6
Description
AUTO/MAN switching can be performed by any of the following:
(1) MODE key
(2) Operation mode parameter
(3) Contact input
(4) Communication
When the above (1) or (2) is used to switch AUTO to MAN and MAN to AUTO, the
display is switched to OUT Display and SP Display, respectively.
AUTO MAN
When the contact input (status) is ON, operation cannot be performed by keystroke or
communication.
When the contact input is OFF, and the setting is switched by keystroke or
communication, the last switching operation is performed.
► Switch by contact input: 12.1 Setting Contact Input Function
► Switch by user function key: 13.2 Assigning Function to User Function Key
Switch Outputaction
AUTO→MAN
Holds the control output value from AUTO mode.
The control output value can be bump to the manual preset output value by the
setting of parameter MPO.
The output value can be changed in manual mode.
MAN→AUTO
The control output value does not bump (bumpless). Does not work when
Integral time (I) = OFF.
► Switch from AUTO to MAN, and MPON: 10.12.2 Setting Output Value When Switched to MAN
Mode (Manual Preset Output)
OperationDisplayinAUTOandMANModes
“OUT” is displayed on Symbol display and “Output value” is displayed on Data display in
MAN mode. (The OUT Display is shown.)
SP Display is shown in AUTO mode.
OperationDisplayinAUTOandMANModesinHeating/coolingControl
In MAN mode, the Display is as follows. Symbol “C” represents the cooling side and “H”
represents the heating side. The value on the right of each symbol is the output value.
LampStatus
Status MAN lamp
Automatic operation (AUTO) Unlit
Manual operation (MAN) Lit
6.6SwitchingOperationModes

YOKOGAWA UP55A Specifications

General

Brand	YOKOGAWA
Model	UP55A
Category	Controller
Language	English