Name: MAC12
Brand: Exhausto
SKU: MAC12

Constant pressure regulator, MAC12

MAC12 controls the start/stop of the fan and maintains the desired pressure. MAC12 can be placed wherever it is most practical - in the technical room or near the fan with a signal to the technical room. MAC12 is supplied as standard with an XTP sensor.

MAC12 can regulate the fan in three different ways:

1. Two preset pressures

MAC12 allows for two preset pressures (high/low), so that ventilation can be adapted to the needs in the system's operating area. The high and low pressures are selected and set individually in the constant pressure regulator via the very simple menu.

Alarm function

MAC12 has a built-in alarm function that is activated and displayed on the screen when the desired pressure is not maintained. There is also a potential-free contact for an external alarm.

In MAC12, the pressure deviation and the duration of the deviation that will trigger the alarm are set. The constant pressure regulator continues to operate during the alarm and will still try to maintain the desired pressure. MAC12 can be connected to a thermal fuse in the fan motor or an alarm signal from the frequency converter. Any alarm on that input is forwarded and the fan stops.

2. External start/stop

MAC12 also has the possibility of external start/stop.

3. Override

MAC12 allows for override to an independent pressure level or max. air volume.

Control of multiple channel systems

MAC12 can control up to 5 parallel single-channel systems. This requires the system to be built exclusively via the modbus interface, so that a correct link between the different pressure sensors and the associated fans can be ensured. Each system is considered an independent system, with its own operating points and control parameters. In this context, an MXTP pressure sensor must be used.

External communication

MAC12 is equipped with a modbus interface for external connection to, for example, BMS/CTS systems. Via the connection, it is possible to read the operating status and make changes to all operating parameters.

Variants	Supply voltage	Alarm switch (max. load)	Operating range	Setting range for alarm pressure	Setting range for alarm time	Temperature setting high	Temperature setting low	Max. cable length	Measurement precision
MAC12 constant pressure regulator	230 VAC	Potentialfri skiftekontakt 230VAC/24, 8AAC1/3A AC3	0-5000 Pa, operating range varying according to range of XTP sensor	0 - 2500 Pa	0-1000 Sec	-10°C - +15°C	-45°C - 0°C
MXTP, XTP sensor with Modbus	24V AC/DC, 50 mA		-50 - +50 Pa 0 - 100 Pa 0 - 150 Pa 0 - 300 Pa 0 - 500 Pa 0 - 1000 Pa 0 - 1600 Pa 0 - 2500 Pa					80 m	1,5% vom Messwert + 0,3% vom Messbereich + 2,5 Pa
MAC12-XTP XTP SENSOR	24V AC/DC, 50 mA		0-2500 Pa					150 m	(-20°C - +40°C). 0,5% af måleværdi + 2,5 Pa
MAC12XTP	24V AC/DC, 50 mA		-50 - +50 Pa 0 - 100 Pa 0 - 150 Pa0 - 300 Pa0 - 500 Pa 0 - 1000 Pa 0 - 1600 Pa0 - 2500 Pa					80 m	1,5% vom Messwert + 0,3% vom Messbereich + 2,5 Pa

Variants	Ambient temperature range
MAC12 constant pressure regulator	-30°C - +50°C
MAC12MOD	-30°C - +50°C
MXTP, XTP sensor with Modbus	-30°C - +50°C
MAC12-XTP XTP SENSOR	-30°C - +50°C
MAC12XTP	-30°C - +50°C

Variants	A (mm)	B (mm)	C (mm)	Height (mm)	Width (mm)	Depth (mm)
MAC12 constant pressure regulator	222 mm	145 mm	55 mm
MAC12MOD	222 mm	145 mm	55 mm
MXTP, XTP sensor with Modbus	75 mm	90 mm	55 mm
MAC12-XTP XTP SENSOR	75 mm	90 mm	36 mm	90 mm	75 mm	36 mm
MAC12XTP	55 mm	52 mm	27 mm

Variants	Consumption
MAC12 constant pressure regulator	0.5 W

Variants	Protection rating	Max. line fuse (A)	Power consumption	Output signal
MAC12 constant pressure regulator	IP54	13 A
MAC12MOD	IP54	13 A
MXTP, XTP sensor with Modbus	IP54		0,5 W	0 - 10 VDC
MAC12-XTP XTP SENSOR	IP54		0,5 W	Modbus
MAC12XTP	IP54		0,5 W	0 - 10 VDC