5. SETUP PROCEDURES PRIOR TO RUNNING THE INSTRUMENT
5-8 IMR02C15-E4
5.3 Operation Start
Check the following precautions before starting operation.
CAUTION
Power ON
There is no power switch on this instrument, so the instrument starts operation immediately following
initial power ON. [Factory set value: RUN (Control start)]
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:
According to the setting contents of Burnout direction in the Engineering mode.
0: Upscale 1: Downscale
[Factory set value: Upscale]
RTD input: Upscale (at input break) or downscale (at short-circuited)
Voltage/Current input:
Downscale or indicate the value near 0
• Output at burnout
Control output: According to the setting contents of Control output at burnout in the Engineering mode.
0: Result of control computation 1: Low output limiter value (Output OFF)
[Factory set value: Result of control computation]
Event output: According to the setting contents of Event output action at input burnout in the Engineering mode.
0: Event output is not forcibly turned on when the Burnout function is activated.
1: ON at over-scale; no action at underscale.
2: ON at underscale; no action at over-scale.
3: ON at over-scale or underscale.
4: OFF at over-scale or underscale.
[Factory set value: Event output is not forcibly turned on when the Burnout
function is activated.]
Check each parameter
The settings for the SV and all parameters should be appropriate for the controlled system.
There are parameters in Engineering mode which can not be changed when the controller is in RUN
mode. Change the RUN/STOP mode from RUN to STOP when a change to parameters in Engineering
mode is necessary.
Event hold action
• The event hold action is activated when the power is turned on or when transferred from STOP mode
to RUN mode. (Event type with hold action)
• The event re-hold action is activated when not only the SV is changed, but also when power is turned
on or when transferred from STOP mode to RUN mode. (Event type with re-hold action)
Action at 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.
* 10ms for RB100 with 24V AC/DC power supply
Action at power fail recovery
The instrument will return to the same RUN/STOP state and the same operation mode which were used
by the instrument before power failure.
• In case of AUTO mode
Output changes from the Output limiter low with control calculation results.
• In case of Manual (MAN) mode
Output status is defined as follows by the Bumpless mode setting in the Engineering mode.
In case of “0: Without bumpless” In case of “1: With bumpless” (Factory set value)
Preset manual value is output.
PID control: Output limiter low is output
Heat/Cool PID control: Output is 0 %
To Next Page
Loading...
Need help?
General
