WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 39 of 206
factory set as
“off”
. When the dead-band feature is
“off”
it operates with
nominal value of ± 0.3% of full scale for dead-band. When the feature is
turned
“on”
, the dead-band can be set using the up and down arrow buttons
to a value from 1 to 20. The value 1
(lowest dead-band when turned “on”)
has a dead-band range of 2%, which is equivalent to a dead-band of ± 1%.
The value 20
(highest dead-band value)
has a range of 40%, which is
equivalent to a dead-band of ± 20%.
Cutoff
this feature enables or disables the setpoint cutoff and also configures the low
and high limit for the setpoint cutoff.
Cycle cnt
this
feature enables or disable the cycle count and also set the position dead
band used for the cycle cont.
Tout
This option has two options LCD Tout and Cal Tout:
LCD Tout
this feature configures LCD menu timeout. The range is 1 to 60
minutes. It measures the amount of time there is no activity on
the keypad and returns the system to the main screen after the
configured timeout. The default value is 10 minutes.
Cal
Tout
this feature configures calibration timeout. The range is 20ms up
to 11min. The minimum value for this timeout is the interval of
time needs to full stroke the valve. When the auto calibration is
running and one of the calibration processes (sensor calibration,
low calibration, high calibration and transducer calibration)
detect a small span, it will increase the timeout and calibration
will restart automatically. Before the calibration re-starts
automatically the LCD will show for 5 seconds the following
message: Restarting cal - Adjusting timeout. The message
“HALL span too small” will be show if the calibration failed
because the span and the timeout is set to 11 (40.96s) or
greater value, otherwise the calibration timeout will be increased
and the calibration will restart automatically.
RTC
This function allows the user to set current date (Month/Day/Year) followed by
time (Hour:Minute:Second).
Adjs
This function allows for the adjustment of the positioner to any position via the
keypad. This function places the positioner in digital control mode
(input
current independent)
and therefore allows override of the control signal.
Within this function there are
Fast
and
Slow move
modes. In
Fast move
mode the valve is opened or closed in 5% increments via the keypad. In
Slow
move
mode the valve is opened or closed slowly via the keypad.
OP
This function sets the valve to the fully energized position via the keypad
(Outlet Port 1 = Supply psi & Outlet Port 2 = 0 psi)
. This function places
