Belimo CR24-20 Manual - Page 4
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CR24-..
Control sequence simulation
CR24-B1, CR24-B2, CR24-B3
Notes
– The external control signals (di1, di2 and di3)
are suppressed while the simulation is active.
– The potentiometer changes during simulation
mode should be done slowly to avoid over-
shooting of the output values due to the system
depending adjuster damping.
– A-types (controllers without operation panel):
please do reset the potentiometer to the 0-posi-
tion after simulation to avoid setpoint deviations.
– Simulation mode is automatically deactivated 15
minutes after the last user action (auto-reset).
28
Dimensions, installation, commissioning, service
(CR24-B1, CR24-B2, CR24-B3)
The connected actuators, and thus also the heating and cooling control sequences, can be
simulated independently of the room temperature in simulation mode.
This permits the air volume (
and cooling capacity in water systems.
Heating
0
–1
W = X
–2
–3
Y [V]
X
pH
10
ao1
ao2
ao2
ao3
2
0
–3
0
The simulation mode for the CR24-B2E is basically as described above.
CR24-B2E
Unlike water operated air heaters, electric air heaters are not allowed to be operated without a
flow. Simulations can be carried out on the CR24-.. at any time, even if the ventilation system is
not operating.
The two triac outputs are activated for a maximum of 15 seconds in simulation mode to prevent
overheating due to operation without ventilation. To activate these outputs again, the potentio-
meter must be reset via the "0" position to the heating range.
0
–1
W = X
–2
–3
O
X
pH
10
I
II III
out
3
2
0
–3
0
max. 15 s
and
) to be tested in air systems or the maximum heating
min
max
Cooling
+1
+2
+3
Potentiometer (setpoint adjustment)
for simulating the room temperature
X
pC
ao1
t
[°C]
S
+3
+1
+2
+3
Potentiometer (setpoint adjustment)
for simulating the room temperature
X
pC
out
1
S
+3
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