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3. OPERATION
3.1. General programming sequence
Controller parameters are grouped in 4 levels (parameter groups) according to their frequency of use.
The following order of parameter programming is recommended:
1. Enter level 2 and set the parameter LCK = 1111 to get access to level 4.
2. Enter level 4 to configure basic controller settings (input and output number and use, which
parameters of the other levels will be available for adjustment and which will be hidden ...).
3. Switch back to level 2 and set the parameter LCK = 0000 to get access to level 3.
4. Enter level 3 and set its parameters (input type, alarm type, output action direction ...).
5. Enter level 2 and set preliminary values for the PID (ON/OFF) parameters (proportional gain,
hysteresis …).
6. Enter level 1 and adjust the set point, alarm limits, etc.
7. When the controller is already mounted in place and the system starts functioning, readjust
PID (ON/OFF) control parameters to achieve satisfactory system performance.
8. Switch over to level 2 and set the parameter LCK = 0001 or 0101 to prevent unauthorized
personnel from changing vital controller parameters (level access locking).
3.2. Switching among parameter levels
Normally, the controller operates at level 1 and shows the set-point value on its lower display
and the measured value ─ on the upper display.
Switching over to level 1 may be done in either of the following ways:
• Automatically, when no key has been pressed for 1 minute, regardless of the level.
• By using the A/M key, regardless of the level.
• Automatically, after power-on. At start-up, the input type and range appear consecutively on the display,
followed by the measured value and the set point from level 1.
• Automatically, after exiting level 2, 3, or 4.
Entering level 2:
• While the device operates at level 1, press and hold SET for 5 seconds.
Exiting level 2 may be done in either of the following ways:
• By holding SET depressed for 5 seconds.
• By pressing A/M. Mind that this also toggles between AUTO and MANUAL modes. Does not function
while parameter value is being adjusted (finish parameter adjustment first by pressing SET).
To get access to level 3, set LCK = 0000 from level 2 beforehand.
To get access to level 4, set LCK = 1111 from level 2 beforehand.
Switching over to level 3 or 4:
• While the device operates at level 1 or 2, press and hold SET and W for 5 seconds.
Exiting level 3 or 4 may be done in either of the following ways:
• By holding SET and W depressed for 5 seconds.
• By pressing A/M. Mind that this also toggles between AUTO and MANUAL modes. Does not function
while parameter value is being adjusted (finish parameter adjustment first by pressing SET).
If, after parameter adjustment at level 4, the device expects readjustment at levels 2 and 3, the value
of the parameter LCK automatically changes to 0000.
3.3. Parameter adjustment
• Display the parameter symbol on the upper (red) display and the current value on the lower (green) display.
• Press W to enter parameter value adjustment mode. The rightmost digit starts blinking. To select
another digit, use W. To increase or decrease the blinking digit value, use respectively S or T.
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