The Economizer Controller has 7 analog inputs, 2 analog outputs, 5 digital inputs, 4 digital outputs, an RS485 port and a USB host interface. POL224.00 is additionally equipped with a housing (front and rear, snap-on design), three LEDs, three operation buttons and inbuilt HMI. Customers can operate on the device directly if no mobile application is connected.

No.

Description

1

One-line LCD

2

Free cooling LED

3

Sensor LED

4

DAC (damper actuator) LED

5

Operation button (UP button) - Move to the previous value, step or category

6

Operation button (Down button)- Move to the next value, step or category

7

Operation button (Enter button):

  • Press to edit the current value or option.
  • Press to confirm a newly selected value or option.
  • Press Enter + Up to jump up one entire category.
  • Press Enter + Down to jump down one entire category.

8

Configurable I/Os (AUX1-I, AUX1-O and AUX2-I, AUX2-O) for additional stages of cooling, shutdown, heat conventional (W1), heat pump changeover (reversing valve O/B), or preoccupancy.

9

5 I/Os (Y1I, Y1O, Y2I, Y2O and OCC) for stages of cooling and occupancy for the thermostat connections

10

  • 2 analog outputs (ACT 2-10 Vdc and VFD 0-10 Vdc) for 2-10 Vdc Damper actuator and 0-10 Vdc VFD
  • 1 analog input for ACT-FB

11

  • 6 analog inputs (OAT, RAT, OAH, RAH, MAT and AUX-AI) for:
    • Type II NTC 10K or 0-10 Vdc outside air sensor, return air sensor, mixed air sensor or discharge air sensor
    • 0-10 Vdc or 4-20mA combo temperature and humidity sensor
    • 0-10 Vdc air quality sensor or pressure sensor

12

RS485 port

13

USB host interface for WLAN stick (POL903.00/100)

LED Indication

Status

Free Cooling LED

Sensor LED

DAC LED

Commissioning mode

Yellow Blinking

Yellow Blinking

Yellow Blinking

Power start-up

Yellow On

Yellow On

Yellow On

Free cooling is running

Green On

-

-

Free cooling is available but not running

Green Blinking

-

-

Not economizing when it should

Red Blinking

-

-

Economizing when it should not

Red On

-

-

Sensors working ok

-

Green On

-

Humidity sensor error

-

Yellow On

-

CO2 sensor error

-

LED Off

-

Air temperature failure/fault

-

Red On

-

Excess outdoor air

-

Red Blinking

-

Damper working ok

-

-

Green On

Damper stalled

-

-

Red On

Damper slippage

-

-

Red Blinking

Actuator alarm is reported

-

-

Fast Red Blinking

Terminal ACT-FB is configured but no available feedback signal (under-range or over-range)

-

-

LED Off

NOTICE

If different faulty events occur at the same time, sensor/DAC LED lights up following the priority below: Red (Fast Blinking) -> Red (On, Steady) -> Red (Blinking) -> Yellow -> Off -> Green. For example, if there is a humidity sensor error and air temperature failure at the same time, the sensor LED turns red rather than yellow.

After the Economizer controller enters the running state, it may take one minute for peripheral devices to complete initialization. Before that, LED indication might be unstable.