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INTER 2V4SA
5.
Changing a Parameter
5.1.
Using the Display
Flashing Values: The display
will flash in certain cases
and not in others. The flash-
ing indicates that the value
shown can be adjusted. A
value that is not flashing
cannot be adjusted.
Relative and Absolute Values: Some param-
eter adjustments are displayed both as a
relative value and an absolute temperature.
This applies all heating and cooling differ-
entials, the mist differential and the heater
offset. The parameter is first displayed as a
relative value. The corresponding absolute
temperature is displayed after six seconds if
no action is taken by the user. The absolute
value is the temperature at which the stage
turns on (except in the case of the heater and
mist offsets where the value displayed is the
temperature at which the stage turns off). If
the user presses a button, the relative value
reappears. For example, when the user se-
lects a differential menu, i.e. STAGES 3-6DIF-
FERENTIAL, the sequence is as follows:
(i) The current differential for stage 3 flashes
on the display, alternating with "3 dIF".
3 d I F
(ii) If, after about 6 seconds, no action is
taken by the user, the absolute temperature
value is displayed, alternating with "St 3 On".
In this case, the absolute value is: Set Point
+ Bandwidth 1 + Offset 2 + Bandwidth 2
+ Differential 3.
10
INTER 2V4SA, rev.02
78.0
2 . 0
ST3 on
(iii) When the user presses on an adjustment
button to make an adjustment to differential,
the relative value reappears on the display.
5.2.
Locking the Parameter
Settings
The parameter settings can be locked to pre-
vent accidentally modifying them. When the
settings are locked, only the temperature set
point and the Stage 1 minimum ventilation
speed can be modified (as long as the tem-
perature ramp and the minimum ventilation
speed ramp are deactivated respectively).
• Set internal switch # 1 to ON
to lock the parameters. The
"Locked Parameter" status LED
turns on.
• Set internal switch # 1 to OFF
to unlock the parameters. The
"Locked Parameter" status LED
turns off.
2 . 0
2 . 3
ON
OFF
1
ON
OFF
1
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