Parameter Group 6: Manual Adjustment; Min_Vr - Min. Working Range; Max_Vr - Max. Operating Range - ABB TZIDC Manual

26 TZIDC, TZIDC-200 DIGITAL POSITIONER | COI/TZIDC/TZIDC-200-EN REV. B
... 3 Configuration

Parameter group 6: Manual adjustment

MIN_VR - min. working range

Normally, the operating range is determined automatically
during Autoadjust. A partial run of automatic adjustment that is
limited to the control parameters (CTRL_PAR, see parameter
DANG_DN page 27) or valves and fittings without end stops,
however, requires manual adjustment of the valve range.
CAUTION
Risk of injury!
Following manual adjustment of the end positions, it is
essential that you specify the operating range limits (> 0.1 and
< 99.9) using MIN_RGE and MAX_RGE. Otherwise, the valves
and fittings may be driven at full speed to an end position.
• Do not reach into the adjustment mechanism.
The range between high and low limit value must be at least 10%
of the full range. Otherwise the message VR< 10 % appears on
the display.
Note
Use as large are range as possible. This parameter is not active
when the safe position is active. The display then shows the
message FAIL_POS.
Use MIN_VR to specify the lower limit of the operating range.
 or  Press in order to travel to the desired position.
ENTER Press and hold until the countdown ends MIN_SET. The
position is taken over as min. limit value.
ENTER Press briefly. The set limit value is displayed for 2 seconds
MIN_SAVE.
MAX_VR – max. operating range
Normally, the operating range is determined automatically
during Autoadjust. A partial run of automatic adjustment that is
limited to the control parameters (STANDARD, see parameter
ADJ_MODE page 15) or fittings without end stops, however,
requires manual adjustment of the valve range.
CAUTION
Risk of injury!
Following manual adjustment of the end positions, it is
essential that you specify the operating range limits (> 0.1 and
< 99.9) using MIN_RGE and MAX_RGE. Otherwise, the valves
and fittings may be driven at full speed to an end position.
• Do not reach into the adjustment mechanism.
The range between high and low limit value must be at least 10%
of the full range. Otherwise, the message VR < 10 % is displayed.
Note
Use as large are range as possible. This parameter is not active
when the safe position is active. The display then shows the
message FAIL_POS.
Use MAX_VR to specify the upper limit of the operating range.
 or  Press in order to travel to the desired position.
ENTER Press and hold until the countdown ends MIN_SET. The
position is taken over as min. limit value.
ENTER Press briefly. The set limit value is displayed for 2 seconds
MIN_SAV.