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Commissioning / Power on behaviour
Power on behaviour
Test and simulation mode
Activating test and simulation mode
Deactivating test and simulation mode
Internal function test
Note
Case B and C do not need further attention. In
case A (<20 V) attation must be paid to the follow-
ing points:
– Quality of the wiring and connections
– Cable length/diameter and the transformer sizing.
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Dimensions, installation, commissioning, service
1. Assemble the baseplate of the housing and connect the cables (see page 15).
Commissioning
2. Configure the DIP switches on the printed circuit board according to the required application.
3. Assemble the printed circuit board on the baseplate of the housing and then mount the
housing cover (see page 15).
4. Switch on the nominal voltage (AC 24 V).
5. Optional: start the test and simulation mode (see below).
When the voltage is applied, the system starts operating normally in AUTO mode (unless the
test and simulation mode is selected). The
active operating status is determined primarily by the configuration of the DIP switches and the
status of the inputs
After power on of the voltage supply the output gets initialized as
follows:
– ao1 = 0 V
– ao2 = 0 V
– ao3 = closed (200 s)
Subsequently the controller switches automatically to the control mode.
All controllers are supplied with two auxiliary programs for commissioning and servicing:
– Internal function test
– Control sequence simulation
The test and simulation mode of CR24-B.. controllers can be activated easily with the mode
switch on the operator panel. With CR24-A.. controllers, the housing cover must be removed
first.
To activate test mode
1. Set the mode switch to MAX
– The red LED (MAX status indication) lights up
2. Keep the mode switch pressed for ten seconds
– The internal function test is activated (see below)
To activate simulation mode
3. Press the mode switch again briefly (for approximately one second)
– The green LED (AUTO status indication) flashes
– Control sequence simulation is activated (see below)
The test and simulation mode can be deactivated either by pressing the mode switch again for
ten seconds or by interrupting the power supply. It is also deactivated automatically 15 minutes
after the last user action (auto-reset).
The internal function test tests the nominal voltage that is connected to the controller (AC 24 V),
in other words the complete electrical wiring system from the control cabinet to the controller.
The three LEDs (status indication) indicate the voltage level (see below) and states during the
test.
Nominal voltage (AC 24 V)
LED (status indication)
MAX
red
ECO
orange
AUTO
green
Scenario A
Scenario B
flash
flash
flash
flash
permanently off
flash
<20 V
20...22 V
CR24-..
Scenario C
permanently on
permanently on
permanently on
>22 V
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