User’s Manual 7
Four settings can be adjusted on the device using the trimmers on the front:
TR1 - RAMP:
adjusts the linear increment ramp for the value/duration of the command;
corresponds to the increment/decrement speed of the value with the respective controls enabled.
Turning clockwise increases the rapidity of the increment, which decreases vice versa counter-
clockwise. The total time of the range can be adjusted from 4 seconds to 120 seconds.
TR2 - RESET
:
adjusts the value after a RESET command; between MIN and MAX value:
normally corresponds to 50% of the output (if output is set to +/- 10 mA the reset value is 0 mA)
TR3 - MIN:
adjusts the minimum value obtainable with
DOWN
command; turning the trimmer
clockwise increases the minimum value
TR4 - MAX:
adjusts the maximum value obtainable with the
UP
command; the maximum value
increases as the trimmer is turned clockwise
To get the full range,
MIN
must be turned fully counter-clockwise and
MAX
fully clockwise. In the
abnormal condition in which the set
MIN
value exceeds the set
MAX
value or vice versa; after an
increment or decrement command, the current output remains stable at a fixed value.
The value range can be adjusted observing the relative position of the trimmers, the limits (minimum and
maximum) are directly proportional to the angles of rotation of the respective trimmers at the nominal
value. The RESET trimmer adjusts the default value; the adjustment is linear between the MIN and MAX
values set (ex. with trimmer in the middle of its range, there is the intermediate value halfway between
MIN and MAX).
To adjust the range, proceed as follows:
-
turn RAMP (TR1) to half its value;
-
set the MAX value to half the value
-
set the MIN value to half the value
Proceed as follows:
-
With the UP input always active, adjust the output to the desired maximum value by turning
trimmer MAX TR4 clockwise.
-
With the DOWN input always active, adjust the output to the desired minimum value by turning
trimmer MIN TR3 clockwise.
-
With the RESET input always active, adjust the output to the desired reset value by turning trimmer
RESET TR2 clockwise/counter-clockwise.
-
Adjust trimmer RAMP (TR1) to obtain the desired rapidity of increment/decrement response.
To fine tune the trimmer values, use the following register:
40019
40019
Select an adjustment
source
0 = from trimmer, 1 =
from Modbus, 2 =
Modbus + trimmer for
fine tuning (+/- 12.5%)
-
By setting the registry to 0 the MIN, MAX, RESET, RAMP values are only acquired by the trimmer.
