Aerotech Aerospeed 2.2 ST 5220 User Manual
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Aerotech Aerospeed 2.2 ST 5220 User Manual

Temperature controller aerotech aerospeed 2.2 st 5220
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Temperature Controller
ST 5220
USER'S MANUAL
ST5 2 2 0
A e r o t e c h , I n c .
F O R M : QM 1336
4215 Legion Dr.
Mason, MI
48854-1036 USA
October 1998
Ph. (517) 676-7070 Fax (517) 676-7078

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  • Page 1 Temperature Controller ST 5220 USER'S MANUAL ST5 2 2 0 A e r o t e c h , I n c . F O R M : QM 1336 4215 Legion Dr. Mason, MI 48854-1036 USA October 1998 Ph. (517) 676-7070 Fax (517) 676-7078...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Page PRECAUTIONS ..............3 FEATURES ................. 4 LOCATION OF THE CONTROLS ........6 Controller Status Leds ............7 Internal Switches .............. 7 INSTALLATION ..............8 Mounting Instructions ............8 Connections ..............8 Motor Types ..............9 Temperature Probes ............12 Heating Options ..............

  • Page 3: Precautions

    PRECAUTIONS We strongly recommend installing supplementary natural ventilation, a failure alarm system as well as a back-up ther- mostat on at least one cooling stage (refer to the wiring diagram enclosed with this user's manual to connect the thermostat). Although fuses on the outputs of the controller protect its circuits in case of an overload or overvoltage, we recommend installing an additional protection device on the supply circuit as well as an external relay on all ON-OFF stages to prolong...

  • Page 4: Features

    FEATURES The ST 5220 is an electronic device used for environmental control in livestock buildings. It allows the user to maintain a specified target tem- perature by controlling the operation of ventilation and heating equipment. Two stages of variable speed cooling fans and two stages of either constant- speed cooling fans or heaters can be connected to the controller.
  • Page 5 ST 5220 FULL-SPEED FAN START-UP In order to overcome the inertia of the ventilation system components and de-ice the fan blades in cold weather conditions, the controller supplies maximum voltage to the variable speed fans for 2 seconds immediately following each start-up. FOUR INDEPENDENT TEMPERATURE PROBE INPUTS Up to four temperature probes can be connected to the controller in order to obtain a more accurate reading of the average room temperature and a...

  • Page 6: Location Of The Controls

    LOCATION OF THE CONTROLS QM 1336.rev.01...

  • Page 7: Controller Status Leds

    ST 5220 CONTROLLER STATUS LEDS INTERNAL SWITCHES The internal switches are located on the inside of the front cover. When the controller is shipped from the factory, all the switches are set to OFF. QM 1336.rev.01...

  • Page 8: Installation

    INSTALLATION OUNTING INSTRUCTIONS Open the latch and lift the cover. Remove the black caps located on each of the four mounting holes. Mount the enclosure on the wall using four screws. Be sure the electrical knockouts are at the bottom of the enclosure in order to prevent water from entering the controller.

  • Page 9: Motor Types

    ST 5220 OTOR TYPES The relationship between the voltage supplied to a motor and its operating speed is described by a motor curve. This curve varies with the make and capacity of the motor. The various motors available in the industry have been divided into five categories and the controller has been programmed with a different motor curve for each of these categories.
  • Page 10 ST 5220 Selecting A Motor Type for Stage 2 Refer to the list of motors enclosed with this user's manual to determine which type (1 to 5) is appropriate for the motors used. Set the selection knob to STAGE 2 — BANDWIDTH. The bandwidth is displayed, alternating with the letters "bd".
  • Page 11 Minimum Speed Setting and Motor Curve Selection Control Settings Minimum at 0.05" Minimum Voltage Motor S.P. Model Numbers Speed Output Dia. Curve 9" AT09Z1, AT10SP1, AT10AP1 (120 VAC) AT09Z2, AT10SP2, AT10AP2 (240 VAC) 14" AT14Z, AT14F, AT14G 15" AT15AP, AT15SP 16"...

  • Page 12: Temperature Probes

    ST 5220 EMPERATURE PROBES Connecting the Probes The controller is supplied with one room probe connected to input # 1. Three additional probes can be connected to inputs # 2, 3 and 4 (see wiring diagram enclosed). CAUTION: Probes operate at low voltage and are isolated from the supply.
  • Page 13 ST 5220 Defective Probes Room Probes: If a defective probe is detected, the Defective Probe Pilot Light flashes. The room temperature shown on the display is then the average temperature measured by the probes in working condition. The controller will operate according to this temperature. To identify the defective probe: Set the selection knob to ROOM TEMPERATURE .

  • Page 14: Heating Options

    ST 5220 EATING OPTIONS Stages 3 and 4 can operate as heating or cooling stages. Set switches # 3 and # 4 to OFF to use both stages for cooling. Set switch # 3 to ON and switch # 4 to OFF to use Stage 4 for heating and Stage 3 for cooling.

  • Page 15: Changing The Parameter Settings

    CHANGING THE PARAMETER SETTINGS HE MEANING OF A FLASHING DISPLAY The display will flash in cer- tain cases and not in others. The flashing indicates that the value shown can be adjusted. A value that is not flashing cannot be adjusted. OCKING THE PARAMETER SETTINGS The parameter settings can be locked to prevent accidentally modifying them.

  • Page 16: Temperature Settings

    TEMPERATURE SETTINGS EMPERATURE UNITS Temperatures can be displayed in either Celsius or Fahrenheit units Set internal switch # 2 to the desired position: • ON to display temperatures in Celsius units. • OFF to display temperatures in Fahrenheit units. IEWING TEMPERATURES The readout can display values from -40.0 F to 120...
  • Page 17 ST 5220 Press the push-button. The temperature reading from probe 1 is displayed, alternating with the letters "Pr 1". For each additional probe, press the push-button. The temperature reading from probe x is displayed, alternating with the letters "Pr x", etc.
  • Page 18 ST 5220 Turn the adjustment knob clockwise one notch further. The maxi- mum temperature flashes on the display, alternating with the letters "Hi". Turn the adjustment knob clockwise a third notch. The room or out- side temperature is displayed again. For each individual probe, press the push-button.

  • Page 19: Temperature Set Point

    ST 5220 EMPERATURE SET POINT The temperature set point is the target room temperature. It can be adjusted between -40.0°F and 99.9°F (-40.0°C and 37.7°C). Adjusting the Temperature Set Point Set the selection knob to SET POINT / TEMP. CURVE.The current set point flashes on the display.

  • Page 20: Temperature Curve

    ST 5220 EMPERATURE CURVE The user can define a temperature curve to adjust the set point automatically over a given time period. Temperature Days A curve is defined using six points. Each point specifies a day number and a set point for that day. Once the points of the curve are defined, the curve must be activated.
  • Page 21 ST 5220 Specifying the Curve Set the selection knob to SET POINT / TEMP. CURVE. The current temperature set point flashes on the display. Press the push-button. The word OFF is displayed indicating that the termperature curve is deactivated. If this is not the case, see below to deactivate the curve.
  • Page 22 ST 5220 Activating the Temperature Curve If you have just finished specifying the points on the curve: Press the push-button once again. The word OFF flashes on the display. Turn the adjustment knob clockwise one notch. The word ON flashes on the display, the Temperature Curve Pilot Light flashes, indicating that the temperature curve is now activated.
  • Page 23 ST 5220 Viewing Current Set Point and Day Number When the temperature curve is activated, the current temperature set point and day number can be viewed at any time. The current day num- ber can also be adjusted in order to move forward or backward on the temperature curve.

  • Page 24: Ventilation Settings

    VENTILATION SETTINGS OOLING OPERATION The ST 5220 controls two stages of variable-speed fans (Stages 1 and 2) and two optional stages of constant-speed fans (Stages 3 and 4«««). The last cooling stage can also be configured as a mist stage. QM 1336.rev.01...
  • Page 25 ST 5220 If room temperature rises: • When room temperature < Set Point, stage 1 fans run at minimum speed according to the minimum ventilation cycle. • At Set Point: stage 1 fans stop operating according to the minimum ventilation cycle and increase in speed as the room temperature rises.

  • Page 26: Minimum Ventilation Cycle

    ST 5220 INIMUM VENTILATION CYCLE When the room temperature is below the set point, the Stage 1 fans operate according to the minimum ventilation cycle. Running the fans even though ventilation is not required for a cooling purpose is useful to reduce humidity levels and supply oxygen to the room.
  • Page 27 ST 5220 Adjusting Stage 1 Minimum Speed The minimum speed can be adjusted between 10 and 100% of the full speed of the fans. Set the selection knob to STAGE 1 — MINIMUM SPEED/CURVE. The current minimum speed for Stage 1 flashes on the display. Use the adjustment knob to ad- just the minimum speed to the de- sired value.

  • Page 28: Ventilation Settings

    ST 5220 ENTILATION SETTINGS Adjusting the Stage 1 Bandwidth The Stage 1 bandwidth is the tempera- ture interval within which the Stage 1 variable speed fans increase or de- crease in speed proportionally to the temperature (see the diagram above). When this value is adjusted, all the starting values for consecutive stages are adjusted by the same amount.
  • Page 29 ST 5220 Adjusting Stage 2 Bandwidth The Stage 2 bandwidth is the temperature interval within which the Stage 2 variable speed fans increase or decrease in speed proportionally to the temperature (see the diagram above). The bandwidth can be adjusted between 0.5°F and 20.0°F (0.3°C and 11.1°C).
  • Page 30 ST 5220 Adjusting the Stage 4 Starting Temperature The Stage 4 starting temperature is the temperature at which the Stage 4 fans start running (see the diagram above). The hysteresis is fixed at 1.5 F and determines when the fans return to a stop. The difference between the starting temperature and the stage 3 starting temperature can go from 0.5°F to 20.0°F (0.3°C to 11.1°C).

  • Page 31: Minimum Ventilation Speed Curve

    ST 5220 INIMUM VENTILATION SPEED CURVE The user can define a minimum ventilation speed curve to adjust the Stage 1 minimum speed automatically over a given time period. Each curve is defined by six points. Each point specifies a day number and a fan speed for that day.
  • Page 32 ST 5220 Table 1. STAGE 4 THRESHOLD VALUE OPERATION ''Set Point - 5.0°F (2.8°C)'' Cooling ''Heater A Starting Temperature - 5.0°F (2.8°C)' Heating ''Set Point'', if the parameter settings are such that the preceding value is greater than the set point. Interaction Between the Temperature Curve and the Mini- mum Speed Curve •...
  • Page 33 ST 5220 • When the minimum speed curve is activated, it will effectively be operating (i.e. the controller will begin to adjust the minimum speed according to the specified points of the curve) only when the current day number of the temperature curve reaches the first day number of the minimum speed curve.
  • Page 34 ST 5220 Specifying the Minimum Speed Curve Set the selection knob to STAGE 1 — MINIMUM SPEED / CURVE. The cur- rent minimum speed flashes on the display. Press the push-button. The word OFF is displayed, indicating that the minimum speed curve is deactivated. If this is not the case, deactivate the curve as described below.
  • Page 35 ST 5220 Activating the Minimum Speed Curve If you have just finished specifying the points on the curve: Press the push-button once again. The word OFF flashes on the display. Turn the adjustment knob clockwise by one notch. The word ON flashes on the display and the Temperature Curve Pilot Light turns on, indicating that the minimum speed curve is now activated.
  • Page 36 ST 5220 Deactivating the Minimum Speed Curve Set the selection knob to STAGE 1 — MINIMUM SPEED / CURVE. The current minimum speed flashes on the display. Press the push-button to display the points of the curve currently defined until the word ON appears (fourteen clicks). Turn the adjustment knob counterclockwise by one notch.

  • Page 37: Mist Cooling

    ST 5220 IST COOLING he last cooling stage can be configured as a mist stage. The number of heating stages determines which stage this is. NUMBER OF HEATING STAGES MIST STAGE Note that if two heating stages are needed, no mist stage can be config- ured.
  • Page 38 ST 5220 Adjusting the Mist Starting Temperature and Timer The mist starting temperature is bounded below by the starting temperature of the preceding cooling stage + 0.5 F (0.3 C) and above by the starting temperature of the preceding cooling stage + 20.0 F (11.1 C).
  • Page 39 ST 5220 If Stage 4 is the mist stage: Set the selection knob to STAGE 4 — START TEMP. The mist starting temperature is displayed, alternating with the letters "ST4". Use the adjustment knob to set the starting temperature to the desired value.

  • Page 40: Heater Settings

    HEATER SETTINGS All heaters operate according to the average reading from all temperature probes and only one heater off temperature is needed. Heating Heater B OFF Heater B ON Heater B Heater A ON Heater A Heater A OFF Room Temperature HEATER B HEATER A...
  • Page 41 ST 5220 Adjusting Starting Temperatures The heater starting temperature is the temperature at which the heating units turn on (see diagram above). The Heater A starting temperature is bounded above by the off temperature — 0.5°F and below by the off temperature —...

  • Page 42: Alarm Settings

    ALARM SETTINGS The controller sets off an alarm in the case of a power failure, a fault in the supply circuit or a high or low temperature. Temperature alarms by high and low temperature thresholds as shown below. Room High Temperature Alarm Temperature High Temperature Set Point...

  • Page 43: Troubleshooting Guide

    TROUBLESHOOTING GUIDE SOLUTION PROBLEM CAUSE The circuit breaker at Correct the problem and reset There is no the service panel is the circuit breaker. display. off or tripped. The wiring is incor- Correct the wiring. rect. The voltage selector Set the switch to the correct switch is in the position.
  • Page 44 ST 5220 SOLUTION PROBLEM CAUSE A variation in resist- The display Be sure the probes are dry. ance is induced on a shows sudden Locate them away from drafts probe. variations in the and sources of radiant heating. room or outside Be sure the outside probe is temperature.
  • Page 45 ST 5220 SOLUTION CAUSE PROBLEM The stage 1 or 2 Adjust the minimum speed to a The minimum speed variable speed higher value. is too low. cooling fans are not running. The fan motor is Check if the motor is defective (continued) defective.
  • Page 46 ST 5220 PROBLEM CAUSE SOLUTION The stage 1 Set the stage 1 time off to The stage 1 time off variable speed a value other than zero. is set to zero. cooling fans run continuously Correct the wiring. Be sure The wiring is incor- when the room two different lines are connected...
  • Page 47 ST 5220 SOLUTION PROBLEM CAUSE Be sure the cable is firmly The display board The cooling fans plugged in. interconnect cable is are not running. not properly plugged into the power supply board. The heaters are not turning on. The fan motor or Check if the motor or heater is heater is defective.

  • Page 48: Technical Specifications

    TECHNICAL SPECIFICATIONS Supply: - 115/230 VAC (-18%, +8%), 60 Hz, L1 same phases as Stages 1 and 2, overload and overvoltage protection fuse F11-1A fast blow. - 12 VDC for AC back-up supply; can activate stages 3 and 4 if supplied with DC back-up voltage.

  • Page 49: Factory Settings

    FACTORY SETTINGS F ° F ° QM 1336.rev.01...
  • Page 50 ST 5220 NOTES: i) These initial parameter settings will not be retained in the controller's memory. Each new setting will replace the preceding one. ii) If the power supply is cut off, the last parameter settings will be retained in memory until the power is restored. QM 1336.rev.01...

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