Omega MICROMEGA CN77000 series User Manual page 51

Output 1 cont.
Display Action
XI
% %
Press MIN & MAX
0099
Press ENTER
Example: On an analog output of 0~10 Vdc, a setting of %LO = 10 and %HI = 90, cause the minimum on the control output to be 1 V
and the maximum on the control output to be 9 V. The same setting on a time proportional output, will cause 10% duty
cycle for the minimum control output and 90% duty cycle for the maximum control output. To disable %LO/HI, set LO to 00
and HI to 99. If %LO/HI is at other values than the default (%LO = 00, %H I= 99), ÒSoakÓ is disabled.
CTRL
Press ENTER
TYPE
Press MAX
Press ENTER
CTRL
PID
The ON/OFF control is a coarse way of controlling the process. The
Note
associated with the On/Off control. The PID control is best for processes where the setpoint is continuously
changing and/or a tight control of the process variable is required. PID control requires tuning and adjustment
of the
Controller provides an
Response
MAXIMUM/PERCENT HIGH SUBMENU
Specify in percent, the maximum value (0099) for control output. If the output is analog,
then the maximum voltage or current, in percent, is specified. If the output is time
proportional, then the maximum duty-cycle, in percent, is specified.
10) Display shows Ò
11) Use MAX & MIN buttons to enter a new value for Percent Low.
12) Press ENTER to store the current setting and to advance to *Control Type submenu.
*CONTROL TYPE SUBMENU: (Relay, SSR or Pulse Option)
13) Display flashes
14) Scroll through the available selections: ON/OFF or PID.
15) Display flashes
" " "
Proportional , Integral or Reset
"
Auto Tuning
O : C
PERATION ONFIGURATION
% % xi
Ó and flashes the 10s digit of the current Percent Low setting.
" " " "
0n . 0f or Pid .
" "
strd message and advances to
" "
and Derivative or Rate
"
feature making the tuning process automatic, possibly optimum.
M
ODE
" "
Action Type submenu.
" "
Dead Band improves the cycling
"
terms by a trial-and-error method. The
part
3
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