RKC INSTRUMENT PF900 User Manual

5. OPERATION
IMR02L04-E3
5-7
5.2 Operating Precautions
Check the following precautions before starting operation.
 Power ON
Once power is restored to the instrument the operation mode will return as it was before the power went OFF.
The operation mode is displayed after the Input type and Input range.
[Factory set value: Reset mode (RESET)]
Action at power ON can be selected at Hot/Cold start of F50.02 in the Engineering mode (P. 4-41).
The digital input (DI) becomes valid approximately nine seconds after power on.
For Hot/Cold start, refer to 6.5.5 Start action at recovering power failure of the PF900/PF901
Instruction Manual (IMR02L03-E) on the CD-ROM.
 Action at input error
If the input signal wiring is disconnected or short-circuited (RTD input only), the instrument determines that
burnout has occurred.
 Burnout direction
Thermocouple input, RTD input, Voltage (low) input:
Conforms to the setting of Burnout direction in the Engineering mode F21.08 (P. 4-34).
0: Upscale (Factory set value) 1: Downscale
Voltage (high) input, Current input:
Downscale or indicate the value near 0
 Output at input error
Control output: Conforms to the setting of Action (high) at input error [F50.04 (P. 4-41)] or Action (low) at
input error [F50.05 (P. 4-41)] in the Engineering mode F50.
0: Normal control (Factory set value) 1: Manipulated output value at input error
Event output: Conforms to the setting of Event output action at input error in the Engineering mode F41.
to F44.
 Check each parameter
Control target value and parameters should be appropriate for the application when setting Segment level,
Set value (SV) or parameters. There are parameters in Engineering mode which can not be changed when the
controller is in the RUN mode, the FIX mode and the MAN mode. Switch to the RESET mode to set the
parameters in Engineering mode.
For mode switching or parameter, refer to 4. BASIC OPERATION (P. 4-1) in this manual or
4. BASIC OPERATION of the PF900/PF901 Instruction Manual (IMR02L03-E) on the
CD-ROM.
 Event hold action
Event hold action becomes active when turning on the instrument or starting Event (only for event with hold
action).
 Operation when power failure
A power failure of 20 ms or less will not affect the control action. When a power failure of more than 20 ms
occurs the instrument assumes that the power has been turned off. When restarting following a power failure,
the instrument will restore to the Hot/Cold start setting.
For Hot/Cold start, refer to 6.5.5 Start action at recovering power failure of the PF900/PF901
Instruction Manual (IMR02L03-E) on the CD-ROM.
When PV reaches Input error determination
point (high) or higher temperature:
When PV reaches Input error determination
point (low) or lower temperature:
0 Confor
m
s to Event action Confor
m
s to Event action
1 ON Confor
m
s to Event action
2 Confor
m
s to Event action ON
3 ON ON
4 OFF OFF
Factory set value: 0 (Conforms to Event action)

RKC INSTRUMENT PF900 Specifications

General

Brand	RKC INSTRUMENT
Model	PF900
Category	Controller
Language	English