Regin AL24A2 Bedienungsanleitung

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86
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IMPORTANT: Read these
instructions before installation
and wiring of the product.
BY3
Output - heating
Y1
P-band
BY2
Y2
Output - cooling
Nz
BY1
Fig 1
1
24 V AC Supply voltage
2
System neutral (24 VAC)
3
Output 0..10V heating
4
Signal GND
5
Output 0..10V cooling
6
Signal GND
7
External sensor
8
SPC
Room controller, two 0...10 V outputs
AL24A2 is a room controller with two 0..10V outputs. The unit is
suitable for zone control of heating and cooling in ventilation and
airhandling systems. It has built-in sensor, input for external
sensor and input for SPC. The controller can operate in either P or
PI mode.
The P-band is adjustable between 0,5..50K and I-time can be set
either to 2 or 20 minutes.
Installation
Mount the controller in a place that reflects the overall ambient
temperature in the room. Open the front cover by depressing the
plastic latchhook on the lower cover edge. Use a small screwdriver
or similar.
Ambient temperature, running
Ambient humidity
Cover protection class
Wiring
Supply voltage
24V AC ±15%, 50-60Hz. Power consumption 2VA.
Terminal 1 24V AC
Terminal 2 24V AC System neutral
Outputs
2 x 0..10V DC, 1mA
Load impedance min 10 KOhm
Terminal 3 0..10V Heating
Terminal 4 Signal GND
Terminal 5 0..10V Cooling
Terminal 6 Signal GND
Sensor
The controller has a built-in sensor. If external sensor is used,
connect it to terminals 6 and 7. Jumper Ext/Int (BY1) should be set
in Ext position.
Terminal 7 Ext. sensor (NTC)
Terminal 6 Signal GND
SPC (SetPoint Control)
SPC (Setpoint Control)
Using an external signal between 0..10V on the SPC input, the
setpoint can be offset up or down. At 5V DC on this terminal, no
change is made to the setpoint. At 0V, setpoint is offset with -15K
and at 10V with +15K.
Terminal 8 0..10V input equals to offset SP with ±15K (SPC)
Terminal 6 Signal GND
0..+50°C
max 90% RH
IP20
Settings
Setpoint
Adjust with knob that extends from the lower right of the casing.
The knob setting can be mechanically fixed with the latchscrew
located under the front cover.
P-Band
0,5..50K (See figure 1)
Neutral zone
The neutral zone is adjustable ( see figure 1) between 0...3 K
and determines the relative starting point for the cooling
function. The cooling output is allowed to increase only when
temperature rises above setpoint + current neutral zone. This
makes the overall system more stable and prevents hunting.
Heating/Cooling function
See notes in section "Wiring".
Jumpers
Right pos. = Internal sensor (factory setting)
Jumper BY1
Left pos. = External sensor
Jumper BY2 Closed = I-time is 2 min (factory setting)
Open = I-time is 20 min
BY2 setting valid only when BY3 is set to PI-function.
Jumper BY3 Closed = P-function
Open = PI-function (factory setting)
Indicators
AL24A2 has a red and a green LED for output level (Y1 and Y2)
indication where the brightness corresponds to output voltage
level (see figure 1).
Technical support
Consult your local Regin dealer.
EMC emission and immunity standard
This product conforms with the requirements of European EMC
standards CENELEC EN50081-1 och EN50082 - 1 and carries
the CE mark.