Munters ST5120 Owner's manual

Munters ST5120 Owner's manual
Temperature Controller
ST 5120
USER'S MANUAL
ST5120
Aerotech, Inc.
4215 Legion Dr. Mason, MI 48854-1036 USA
Ph. (517) 676-7070 Fax (517) 676-7078
F O R M : QM 1332
October 1998
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
Heating / Cooling Option ................................................... 11
Temperature Probes ......................................................... 11
CHANGING THE PARAMETER SETTINGS ...................... 14
The Meaning of a Flashing Display ................................... 14
Locking the Parameters Settings ...................................... 14
TEMPERATURE SETTINGS ............................................. 15
Temperature Units ............................................................ 15
Viewing Temperatures ...................................................... 15
Temperature Set Point ...................................................... 18
Temperature Curve ........................................................... 19
VENTILATION SETTINGS ................................................. 23
Cooling Operation............................................................. 23
Minimum Ventilation Cycle ................................................ 25
Ventilation Settings ........................................................... 27
Minimum Ventilation Speed Curve .................................... 29
Mist Cooling ..................................................................... 34
HEATER SETTINGS .......................................................... 37
ALARM SETTINGS ............................................................ 39
TROUBLESHOOTING GUIDE ........................................... 40
TECHNICAL SPECIFICATIONS ........................................ 45
FACTORY SETTINGS ........................................................ 46
2
QM 1332.rev.00
PRECAUTIONS
We strongly recommend installing supplementary natural
ventilation, a failure alarm system as well as a back-up thermostat on at least one cooling stage (refer to the wiring
diagram enclosed with this user's manual to connect the thermostat).
Although fuses at the input and 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 the life of the controller.
The room temperature where the controller is located MUST
ALWAYS REMAIN BETWEEN 32°F AND 104°F (0°C TO 40°C).
To avoid exposing the controller to harmful gases or excessive humidity, it is preferable to install it in a corridor.
DO NOT SPRAY WATER ON THE CONTROLLER
FOR CUSTOMER USE
Enter below the serial number located
on the side of the controller and retain
this information for future reference.
Model number:
Serial number:
Date installed:
___ST 5120___
_____________
_____________
QM 1332.rev.00
3
FEATURES
The ST 5120 is an electronic device used for environmental control in livestock buildings. It allows the user to maintain a specified target temperature by controlling the operation of ventilation and heating equipment. One
stage of variable speed cooling fans can be connected to the controller, as
well as two stages of either constant-speed fans or heating units. In addition, the last cooling stage can be configured as a mist cooling stage.
The main features of the ST 5120 are as follows:
THREE-DIGIT DISPLAY
A three-digit display provides a high level of accuracy, allowing the user to
specify a temperature to within one tenth of a degree (in Fahrenheit or Celsius units).
PILOT LIGHTS
Pilot lights indicating the state of outputs allow the user to monitor the
operation of the system without having to enter the building.
MINIMUM VENTILATION CYCLE
When ventilation is not required for cooling, the first stage fans can be operated either continously or intermittently to reduce the level of humidity and
supply oxygen to the room.
TEMPERATURE AND MINIMUM VENTILATION SPEED CURVES
The controller can be set to automatically change the temperature set point
and the minimum ventilation speed over a given period of time in accordance
with the user's requirements by specifying a temperature curve and a minimum ventilation speed curve with up to six different points each.
CHOICE OF FIVE MOTOR CURVES
The variation in motor speed resulting from a change in voltage will depend
on the make and capacity of the motor. In order to achieve a high degree of
compatibility between controller and motor, the user can choose from among
five different motor curves, thus ensuring that the correct voltage is supplied.
4
QM 1332.rev.00
ST 5120
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
faster reaction time.
OVERLOAD AND OVERVOLTAGE PROTECTION
Fuses are installed at the input and outputs of the controller to protect its
circuitry in the case of an overload or overvoltage.
COMPUTER CONTROL
The controller can be connected to a computer, thus making it possible to
centralize the management of information and diversify control strategies.
CONTROL OF AIR INLET MOVEMENT
If the ST 5120 is used in combination with a SB 2000 controller, the movement of the air inlets can be coordinated with the operation of the fans using
a potentiometer located on the curtain machine or baffle actuator. This
allows the air inlets to be adjusted correctly, without the influence of uncontrollable factors such as wind or air from adjoining rooms. When tunnel
ventilation is being used, the SB 2000 closes the air inlets.
HIGH/LOW TEMPERATURE ALARM OUTPUT
QM 1332.rev.00
5
LOCATION OF THE CONTROLS
ST5120
A ER O TEC H ,IN C . M ason,M I4 8 8 5 4 U S A
QM 1332.rev.00
6
ST 5120
CONTROLLER STATUS LEDS
LED
ME AN IN G
S TAGE 1
T U R N S O N W H E N S TA G E 1 F A N S A R E O N .
S TAGE 2 /
H E AT E R B
T U R N S O N W H E N S TA G E 2 F A N S O R H E A T IN G U N IT S A R E O N .
S TAGE 3 /
H E AT E R A
T U R N S O N W H E N S TA G E 3 F A N S O R H E A T IN G U N IT S A R E O N .
T E M P.
CURVE
F L A S H E S W H E N TH E TE M P E R A TU R E C U R V E IS A C TIV A TE D .
TU R N S O N W H E N TH E M IN IM U M V E N TIL A TIO N S P E E D C U R V E IS
ALSO ON.
D E F. P R O B E
TU R N S O N W H E N A D E F E C T IV E P R O B E IS D E T E C T E D .
ALARM
TU R N S O N W H E N A N A L A R M IS D E T E C T E D .
LOCKED
TURNS ON WHE N C ONTROLLE R PA RA ME TE RS A RE LOC K E D .
ON
INTERNAL SWITCHES
1
2
3
4
5
6
7
8
9 10 11 12
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.
#
OFF
ON
1
UNLOC KED
PARAMETERS
LOC KED PARAMETERS
2
FAHRENHEIT D EGREES
C ELSIUS D EGREES
3
NO HEATING STAGES
HEATING STAGES
4
1 HEATER
2 HEATERS
QM 1332.rev.00
7
INSTALLATION
MOUNTING 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. Insert the screws in the mounting
holes and tighten. Fasten the four black caps provided with the controller onto
the four mounting holes. The enclosure must be mounted in a location that
will allow the cover to be completely opened right up against the wall.
CONNECTIONS
To connect the controller, refer to the wiring diagram enclosed with this user's
manual.
n
Set the voltage switch to the appropriate voltage.
n
Use the electrical knockouts provided at the bottom of the enclosure.
Do not make additional holes in the enclosure, particularly on the top
of the enclosure when using a SL 1400 communication board.
n
If metallic cable holders are used to secure cables entering the
enclosure, use the ground plate provided with the controller. Connect
the ground wire to the ground stud on the plate.
n
For the heating stages, it may be necessary to install a transformer in
order to supply the appropriate voltage to the heating unit.
ALARM CONNECTION: There are two types of alarms on the market. One
type activates when current is cut off at its input, whereas the other activates
when current is supplied at its input. For an alarm of the first type, use the NO
terminal as shown on the wiring diagram. For an alarm of the second type, use
the NC terminal.
!
WARNING
8
ALL WIRING MUST BE DONE BY AN AUTHORIZED ELECTRICIAN
AND MUST COMPLY WITH APPLICABLE CODES, LAWS AND
REGULATIONS. BE SURE POWER IS OFF BEFORE DOING ANY
WIRING TO AVOID ELECTRICAL SHOCKS AND EQUIPMENT DAMAGE.
QM 1332.rev.00
ST 5120
MOTOR 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. To ensure that the
controller supplies the correct voltages, an appropriate curve must be
selected for Stage 1 according to the type of fan motors used (see table on
following page).
Selecting a Motor Type
Refer to the list of motors on the following page to determine which type
number (1 to 5) is appropriate for the motors used.
n
Set the selection knob to
STAGE 1 — BANDWIDTH. The
Stage 1 bandwidth flashes on the
display.
n
Press the push-button. The currently selected type is displayed,
alternating with the letters "tYP".
n
Use the adjustment knob to adjust the motor type to the desired value.
n
Return to the Stage 1 bandwidth display by pressing the push-button.
QM 1332.rev.00
9
ST 5120
Minimum Speed Setting and Motor Curve Selection
16"
15"
14"
AT18Z, AT18F, AT18G, GB18
AT16Z, AT16F, AT16G
AT15AP, AT15SP
AT14Z, AT14F, AT14G
AT09Z2, AT10SP2, AT10AP2 (240 VAC)
AT09Z1, AT10SP1, AT10AP1 (120 VAC)
Model Numbers
4
3
3
1
1
1
1
Motor
Curve
30
40
40
30
65
65
45
45
Minimum
Speed
130
117
107
101
101
101
42
81
Minimum
Voltage
Output
1250
1250
600
140
110
120
50
50
CFM
at 0.05"
S.P.
Control Settings
18"
AT24Z, AT24F, AT24G, GB24
5
9"
24"
AT36Z, AT36ZB1, AT36G1, AT36GB1
Fan
Dia.
36"
The above values assume the following conditions unless noted otherwise:
1) Input Voltage: 240 VAC
2) Static Pressure: 0.05" S.P.
3) Fan Accessories: Hood, Guard and Shutter if applicable.
For configurations or requirements other than above, refer to Form QM1065.
10 QM 1332.rev.00
ST 5120
HEATING / COOLING OPTION
Stages 2 and 3 can operate as heating or cooling stages.
ðSet switches # 3 and # 4 to OFF to use
ON
both stages for cooling.
ðSet switch # 3 to ON and switch # 4 to
OFF to use Stage 3 for heating and Stage
2 for cooling.
3
4
ðSet switches # 3 and # 4 to ON to use
both stages for heating.
Note that if only one stage is used for heating, it must be Stage 3.
TEMPERATURE PROBES
1
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 in order to obtain
a more accurate reading of the average room temperature and a faster
reaction time (see wiring diagram enclosed).
CAUTION: Probes operate at low voltage and are isolated from the
supply. Be sure that probe cables remain insulated from all high voltage
sources. In particular, do not route the probe cables through the same
electrical knockout as other cables. Do not connect the shield from the probe
cable to an input or a ground.
QM 1332.rev.00
11
ST 5120
2
Extending the Probes
Each probe can be extended up to 500 feet (150 meters). To extend a probe:
n
Use a shielded cable of outside diameter between 0.245 and 0.260 in
(6.22 and 6.60 mm) (the cable dimensions should not be under 18
AWG) to ensure the cable entry is liquid tight. Do not ground the
shielding.
n
It is preferable to solder the cable joint to ensure a proper contact
between the two cables.
CAUTION: Do not run probe cables next to other power cables. When
crossing over other cables, cross at 90°.
3
Defective Probes
If a defective probe is detected, the Defective Probe Pilot Light turns on. 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:
n
Set the selection knob to ROOM
TEMPERATURE . The room temperature is displayed.
n
Press the push-button. If the
probe connected to input # 1 and
supplied with the controller is not
defective, the letters"PR1" are displayed, alternating with the on/off
state of the probe and the temperature measured by the probe.
12 QM 1332.rev.00
ST 5120
If the probe is defective, the letters "PR1" are displayed, alternating
with the state of the probe and the letter "P".
For each additional probe connected to the controller:
n
Press the push-button once again. If the probe is not defective, the
letters "PR#" (where # is the number of the input to which the probe is
connected) are displayed, alternating with the on/off state of the probe
and the temperature measured by the probe. If the probe is defective,
the letters "PR#" are displayed, alternating with the on/off state of the
probe and the letter "P".
QM 1332.rev.00
13
CHANGING THE PARAMETER SETTINGS
THE MEANING OF A FLASHING DISPLAY
The display will flash in certain cases and not in others.
The flashing indicates that the
value shown can be adjusted.
A value that is not flashing
cannot be adjusted.
78.0
LOCKING THE PARAMETER SETTINGS
The parameter settings can be locked to prevent accidentally modifying
them. When the settings are locked, only the temperature set point and the
Stage 1 minimum ventilation speed can be modified (as long as the temperature curve and the minimum ventilation speed curve are deactivated
respectively).
To lock the parameter settings:
n
Set internal switch # 1 to ON. The Locked Parameter Pilot Light turns
on.
To unlock the parameter settings:
n
Set internal switch # 1 to OFF. The Locked Parameter Pilot Light
turns off.
14 QM 1332.rev.00
TEMPERATURE SETTINGS
TEMPERATURE UNITS
Temperatures can be displayed in either Celsius or
Fahrenheit units
n
ON
Set internal switch # 2 to the desired position:
• ON to display temperatures in Celsius units.
• OFF to display temperatures in Fahrenheit units.
2
VIEWING TEMPERATURES
The readout can display values from 40.0oF to 120oF ( -40.0oC to 48.9oC).
When the temperature drops below 9.9 degrees, the negative sign is displayed separately, alternating with the
numerical value.
1
Viewing the Room Temperature
The room temperature is the average value of all temperatures measured by
activated probes in proper operating condition.
n
2
Set the selection knob to ROOM TEMPERATURE / PROBE TEMP.
The room temperature is displayed.
Viewing the Probe Temperatures
The controller can display probe temperatures individually. Probes can also
be turned on or off to control the temperature in different parts of the building.
n
Set selection knob to ROOM TEMPERATURE / PROBE TEMP. The
average room temperature is displayed.
QM 1332.rev.00
15
ST 5120
n
Press the push-button. The temperature reading from probe 1 is displayed, alternating with the letters "Pr 1" and the on/off state of probe
1.
n
For each additional probe, press the push-button. The temperature
reading from probe x is displayed, alternating with the letters "Pr x"
and the on/off state of the probe, etc.
n
Press the push-button once again to display the letters "Pr 1" alternating with the state of probe 1 , i.e. ON / OFF (flashing). When a
probe is activated, it is used in the calculation of the average room
temperature.
n
Use the adjustment knob to change the state of the probe.
n
For each additional probe, press the push-button. The state of probe
is displayed, alternating with the letters "Pr x", etc.
Notes:
(i) The display returns to the average room temperature after one minute.
(ii) Initially, only probe one is activated.
(iii) At least one probe must be activated at all times.
3
Viewing Minimum / Maximum Temperatures
The minimum and maximum temperatures are the lowest and highest temperature values recorded since the last reset. Maximum and minimum
temperatures values are recorded for the average room temperature as well
as for individual probe temperatures.
n
Set the selection knob to ROOM TEMPERATURE / PROBE TEMP.
The room temperature is displayed.
16 QM 1332.rev.00
ST 5120
n
Turn the adjustment knob clockwise by one notch. The minimum
temperature is displayed, alternating with the letters "Lo".
n
Turn the adjustment knob clockwise one notch further. The maximum temperature is displayed, alternating with the letters "Hi".
n
Turn the adjustment knob clockwise a third notch. The room temperature is displayed again.
n
For each individual probe, press the push-button. The temperature
reading from probe x is displayed, alternating with the letters "Pr x"
and the on/off state of the probe.
n
Turn the adjustment knob clockwise by one notch. The minimum is
displayed, alternating with the letters "Lo".
n
Turn the adjustment knob clockwise one notch further. The maximum
temperature is displayed, alternating with the letters "Hi".
n
Turn the adjustment knob clockwise a third notch. The probe temperature is displayed again.
n
For each additional probe, press the push-button. The temperature
reading from probe x is displayed, alternating with the letters "Pr x"
and the on/off state of the probe, etc.
NOTE: If you let the display flash for more than 10 seconds, the controller resets the minimum and maximum temperatures currently in memory
(the display stops flashing to indicate that the reset has been done).
QM 1332.rev.00
17
ST 5120
TEMPERATURE 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
n
Set the selection knob to SET POINT / TEMP. CURVE.The current set
point flashes on the display.
n
Use the adjustment knob to adjust the set point to the desired value.
NOTE: The temperature set point can be adjusted only if the temperature
curve is deactivated (see following section).
18 QM 1332.rev.00
ST 5120
TEMPERATURE CURVE
The user can define a temperature curve to adjust the set point automatically
over a given time period.
○
○
○
○
○
○
○
○
○
○
○
○
○
○
d35
○
○
d50
d70
○
○
○
○
○
○
○
○
d25
○
○
○
○
○
○
○
○
○
d4
○
○
○
○
○
○
○
○
T o1
T o2
T o3
T o4
T o5
T o6
○
Temperature
d80 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. The controller will change the temperature set point every
hour in a linear fashion between consecutive points of the curve. When the
last point of the curve is reached, the temperature set point for that day is
maintained until the curve is reactivated.
NOTES :
i) All six points of the curve must be specified. If six points are not needed,
repeat the last temperature value for each unnecessary point.
ii) Certain restrictions apply to reduce the risk of errors:
− The highest possible day number is 99.
− Decreasing day numbers are not allowed.
− Increasing temperatures are not allowed.
− The temperature variation cannot exceed 3°F (1.6°C) per day.
QM 1332.rev.00
19
ST 5120
1
Specifying the Curve
n
Set the selection knob to SET
POINT / TEMP. CURVE. The
current temperature set point
flashes on the display.
n
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.
Repeat the following steps for each of the six points:
n
Press the push-button once again. The word "day" is displayed,
alternating with the day number.
n
Using the adjustment knob, set the day number to the desired value.
n
Press the push-button once again. The current temperature set point
is displayed, alternating with the word "set".
n
Using the adjustment knob, adjust the set point to the desired value.
Once the six points of the curve have been specified, activate the curve as
explained below.
NOTE: Make sure the temperature curve is deactivated before specifying
new points (see below).
20 QM 1332.rev.00
ST 5120
2
Activating the Temperature Curve
If you have just finished specifying the points on the curve:
n
Press the push-button once again. The word OFF flashes on the
display.
n
Turn the adjustment knob clockwise one notch. The word ON flashes
on the display and the Temperature Curve Pilot Light flashes, indicating that the temperature curve is now activated.
n
Set the selection knob to ROOM TEMPERATURE.
If you have previously defined the points on the curve:
n
Set the selection knob to SET POINT / TEMP. CURVE. The current
value of the temperature set point flashes on the display.
n
Press the push-button. The word OFF flashes on the display.
n
Press the push-button to display the points of the curve currently
defined until the word OFF appears (thirteen clicks).
n
Turn the adjustment knob clockwise one notch. The word ON flashes
on the display and the Temperature Curve Pilot Light flashes, indicating that the temperature curve is now activated.
n
Set the selection knob to ROOM TEMPERATURE.
QM 1332.rev.00
21
ST 5120
3
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 number can
also be adjusted in order to move forward or backward on the temperature
curve.
n
Set the selection knob to SET POINT / TEMP. CURVE. The current
temperature set point is displayed.
n
Press the push-button. The current day number is displayed,
alternating with the letters "cur. day".
n
Use the adjustment knob to set the day number to the desired
value.
4
Deactivating the Temperature Curve
n
Set the selection knob to SET POINT / TEMP. CURVE. The current
temperature set point is displayed.
n
Press the push-button to display the points of the curve actually defined until the word ON appears (fourteen clicks).
n
Turn the adjustment knob counterclockwise one notch. The word
OFF flashes on the display and the Temperature Curve Pilot Light
turns off, indicating that the temperature curve is now deactivated.
n Set the selection knob to ROOM TEMPERATURE.
22 QM 1332.rev.00
VENTILATION SETTINGS
COOLING OPERATION
The ST 5120 controls one stage of variable-speed fans (Stage 1) and two
optional stages of constant-speed fans (Stages 2 & 3).
Ventilation
Level
1.5 oF
STAGE 3
1.5 oF
STAGE 2
STAGE 1
Minimum
Ventilation
Cycle
Room
Temperature
Bandwidth
Stage 1
Temperature
Set Point
Start Temp
Stage 2
Start Temp
Stage 3
If room temperature rises:
• When room temperature < Set Point, the stage 1 fans run at minimum
speed according to the minimum ventilation cycle.
• At Set Point: the stage 1 fans stop operating according to the minimum
ventilation cycle and increase in speed as the room temperature rises.
• At Set Point + Bandwidth 1: the stage 1 fans reach full speed.
• At Stage 2 Starting Temp: the stage 2 fans start running.
• At Stage 3 Starting Temp: the stage 3 fans start running.
If the room temperature falls:
• At Stage 3 Starting Temp - 1.5oF: the stage 3 fans return to a stop.
QM 1332.rev.00
23
ST 5120
• At Stage 2 Starting Temp - 1.5oF: the stage 2 fans return to a stop.
• At Set Point + Bandwidth 1: Stage 1 fans start decreasing in speed
as the temperature decreases.
• At Set Point: the Stage 1 fans reach minimum speed.
• Below the Set Point: the stage 1 fans stop operating continuously
and operate according to the minimum ventilation cycle at minimum
speed.
24 QM 1332.rev.00
ST 5120
MINIMUM 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. It also prevents the fans from freezing
in winter.
TIME ON
STAGE 1
STAGE 1 — MIN. SPEED
OFF
TIME OFF
STAGE 1
During time on, the Stage 1 fans run at Stage 1 minimum speed. The Stage
1 Pilot Light turns on. During time off, the Stage 1 fans do not run. The Stage
1 Pilot Light turns off. The Stage 1 minimum speed can also be defined by
a speed curve (see below).
NOTE: The controller supplies maximum voltage to the variable-speed fans
for 2 seconds immediately following each start-up.
Minimum Ventilation Cycle Settings
1. To run the fans continuously at minimum speed, set time off to zero and
time on to any value other than zero.
2. To stop the fans, set time on to zero and time off to any value.
3. To run the fans intermittently, set time on to the desired running time
and time off to the desired off time.
QM 1332.rev.00
25
ST 5120
1
Adjusting Minimum Speed
The minimum speed can be adjusted between 10 and 100% of the full speed
of the fans.
n
Set the selection knob to STAGE
1 — MINIMUM SPEED/CURVE.
The current minimum speed for
Stage 1 flashes on the display.
n
Use the adjustment knob to adjust the minimum speed to the desired value.
NOTE: The minimum speed can be adjusted only if the minimum speed
curve is deactivated or if the minimum speed curve is activated but not currently operating (see below).
2
Adjusting Stage 1 Time On and Time Off
n
Set the selection knob to STAGE 1 — TIMER. The current time on
for Stage 1 flashes on the display, alternating with the letters "On".
n
Use the adjustment knob to adjust time on to the desired value.
n
Press the push-button. The current time off for Stage 1 flashes on the
display, alternating with the letters "Off".
n
Use the adjustment knob to adjust time off to the desired value.
Time on and Time Off can be adjusted between 0 and 900 seconds, in
increments of 15 seconds.
26 QM 1332.rev.00
ST 5120
VENTILATION SETTINGS
1
Adjusting the Stage 1 Bandwidth
The Stage 1 bandwidth is the temperature interval within which the Stage 1
variable-speed fans increase or decrease in speed proportionally to the
temperature (see the diagram above). The hysteresis is fixed at 0.3oF and
determines when the fans start operating according to the minimum ventilation cycle. When this value is adjusted, all the starting values for consecutive
stages are adjusted by the same amount. The bandwidth can be adjusted
from 0.5°F to 20.0°F (0.3°C and 11.1°C).
n
Set the selection knob to STAGE 1 — BANDWIDTH. The current
bandwidth flashes on the display.
n
Use the adjustment knob to adjust the bandwidth to the desired value.
2
Adjusting the Stage 2 Starting Temperature
The Stage 2 starting temperature is the temperature at which the Stage 2 fans
start running (see the diagram above). The hysteresis is fixed at 1.5oF and
determines when the fans return to a stop. When this value is adjusted, all
the starting values for consecutive stages are adjusted by the same amount.
The difference between the starting temperature and the bandwidth (stage 1)
can go from 0.5°F to 20.0°F (0.3°C to 11.1°C).
n
Set the selection knob to STAGE 2 — START TEMP. The current
starting temperature flashes on the display.
n
Use the adjustment knob to adjust the temperature to the desired value.
QM 1332.rev.00
27
ST 5120
3
Adjusting the Stage 3 Starting Temperature
The Stage 3 starting temperature is the temperature at which the Stage 3 fans
start running (see the diagram above). The hysteresis is fixed at 1.5oF and
determines when the fans return to a stop. The difference between the starting
temperature and the Stage 2 starting temperature can go from 0.5°F to 20.0°F
(0.3°C to 11.1°C).
n
Set the selection knob to STAGE 3 — START TEMP. The current
starting temperature flashes on the display.
n
Use the adjustment knob to adjust the temperature to the desired value.
28 QM 1332.rev.00
ST 5120
MINIMUM 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. Once the points are defined, the minimum speed curve must
be activated. When the minimum speed curve is activated, the controller
adjusts the Stage 1 minimum speed every hour in a linear fashion between two consecutive points.
When the last point of the curve is reached, the curve is deactivated. The
controller maintains the minimum speed specified for this point until the
curve is reactivated or until a new single minimum speed is specified using
the first method.
○
○
○
Temperature
or Speed
○
○
○
○
d35
○
○
○
d70
○
○
d50
○
○
○
○
d25
○
○
○
○
○
d4 d10
Temperature Curve
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
Minimum Speed Curve
d80
Days
NOTE:
If the room temperature falls below the threshold value given in Table 1, the
fans will begin to run at the minimum speed specified for the first point of
the curve and will continue to do so as long as the room temperature
remains below the set point. When the room temperature rises above the
set point, the fans will return to the current minimum speed, calculated
according to the minimum speed curve.
QM 1332.rev.00
29
ST 5120
Table 1.
STAGE 3
OPERATION
THRESHOLD VALUE
Cooling
''Set Point - 5.0°F (2.8°C)''
Heating
Heater A Starting Temperature - 5.0°F (2.8°C)
Interaction Between the Temperature Curve and the Minimum Speed Curve
•
The minimum speed curve can be activated only if the temperature
curve is already activated
•
All points of the minimum speed curve other than the first one are
automatically given day numbers identical to those specified for the
temperature curve. Only the first point of the minimum speed curve
has an adjustable day number. This day number must be greater or
equal to the day number specified for the first point of the temperature
curve and less than the day number specified for the second point of
the temperature curve (see example 1).
EXAMPLE 1
TEMPERATURE CURVE
MINIMUM SPEED CURVE
POINT 1
d5
d5 to d19 (adjustable)
POINT 2
d20
d20 (not adjustable)
30 QM 1332.rev.00
ST 5120
•
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.
EXAMPLE 2
TEMPERATURE CURVE
MINIMUM SPEED CURVE
Day
Temperature
Day
Speed
POINT 1
d5
90.0 °F
d10
10 %
POINT 2
d20
85.0 °F
d20
20 %
•
If you activated the temperature curve yesterday, the current day number of the temperature curve is d6. Therefore, if you activate the minimum speed curve today, it will effectively be in operation in 4 days,
when the current day number of the temperature curve reaches d10.
In the meantime, the fans will run at the specified single minimum speed (see example 2).
•
If you activated the temperature curve six days ago, the current day
number of the temperature curve is d11. Therefore, if you activate the
minimum speed curve today, it will effectively be in operation the moment you activate it. In this case, the current minimum speed will be a
value between 10% and 20%.
QM 1332.rev.00
31
ST 5120
1
Specifying the Minimum Speed Curve
n
Set the selection knob to STAGE
1 — MINIMUM SPEED / CURVE.
The current minimum speed
flashes on the display.
n
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.
Repeat the following steps for each of the six points:
n
Press the push-button once again. The word "day" is displayed, alternating with the day number.
n
For the first point of the curve, use the adjustment knob to adjust the
day number to the desired value. For all other points of the curve, the
day number can not be adjusted.
n
Press the push-button once again. The minimum speed for that day is
displayed, alternating with the letters "SPd".
n
Use the adjustment knob to adjust the minimum speed to the desired
value.
NOTES:
i) The minimum speed curve must be deactivated before specifying the
points on the curve (see below).
ii) All six points of the curve must be specified. If you do not need six
different points, repeat your last minimum speed for each unnecessary point of the curve.
32 QM 1332.rev.00
ST 5120
iii) Certain restrictions apply to reduce the risk of errors:
• decreasing minimum speeds are not allowed.
• the minimum speed variation cannot exceed 10% per day.
2
Activating the Minimum Speed Curve
If you have just finished specifying the points on the curve:
n
Press the push-button once again. The word OFF is displayed.
n
Turn the adjustment knob clockwise by one notch. The word ON flashes
on the display and the Minimum Speed Curve Pilot Light turns on,
indicating that the minimum speed curve is now activated.
If you have previously specified the points on the curve:
n
Set the selection knob to STAGE 1 — MINIMUM SPEED / CURVE.
The current minimum speed flashes on the display.
n
Press the push-button to display the points of the curve currently defined until the word OFF appears (fourteen clicks).
n
Turn the adjustment knob clockwise by one notch. The word ON flashes
on the display and the Minimum Speed Curve Pilot Light turns on,
indicating that the minimum speed curve is now activated.
QM 1332.rev.00
33
ST 5120
3
Viewing Current Minimum Speed and Day
When the minimum speed curve is activated, the current minimum
speed and day number can be viewed at any time. To modify the
day number, refer to the section on temperature curves.
n
Set the selection knob to STAGE 1 — MINIMUM SPEED / CURVE.
The current minimum speed is displayed.
n
Press the push-button. The current day is displayed, alternating with
the letters "cur. dAY".
4
Deactivating the Minimum Speed Curve
n
Set the selection knob to STAGE 1 — MINIMUM SPEED / CURVE.
The current minimum speed is displayed.
n
Press the push-button to display the points of the curve currently
defined until the word ON appears (fourteen clicks).
n
Turn the adjustment knob counterclockwise by one notch. The word
OFF flashes on the display and the Minimum Speed Curve Pilot
Light starts blinking, indicating that the minimum speed curve is
now deactivated.
MIST COOLING
The last cooling stage can be configured as a mist stage. The number of
heating stages determines which stage this is.
NUMBER OF HEATING STAGES
0
1
2
34 QM 1332.rev.00
MIST STAGE
3
2
no mist stage
ST 5120
To access the parameters, position the selector switch at the starting
temperature of the mist stage. The parameter settings are as follows:
Starting Temperature (oF or oC) - The mist starting temperature is the
temperature at which the mist units turn on (see the diagram below). The
starting temperature minus 1.5 oF is the temperature at which the mist units
turn off.
Mist units turn on
in timer mode
Mist units turn off
1.5oF
Mist
OFF
Set Point
Starting
Temperature
Room
Temperature
Time on (minutes) - The mist units operate according to a timer cycle.The
time on is the running time of the mist units.
Time off (minutes) - The time off is the off time of the mist units. Note that time
off must be non-zero in order for the controller to recognize the stage as a mist
stage.
TIME ON
ON
OFF
TIME OFF
QM 1332.rev.00
35
ST 5120
1
Adjusting the Mist Starting Temperature
The difference between the mist starting temperature and the starting
temperature of the preceding stage can go from 0.5°F to 20.0°F (0.3°C and
11.1°C).
n Set the parameter selection knob to the starting temperature setting
of the mist stage. The current starting temperature appears flashing
on the display.
n Using the adjustment knob, set the starting temperature to the desired
value.
2
Adjusting the Mist Timer Settings
Time on and Time off can be adjusted between 0 and 60 minutes, in
increments of 1 minute.
n Set the parameter selection knob to the starting temperature
setting of the mist stage. The current starting temperature appears
flashing on the display.
n Push the push-button. The word "On" flashes on the display, alternating with the current time on value.
n Turn the adjustment knob to adjust the time on to the desired value (in
minutes).
n Press the push-button once again. The word "Off" flashes on the
display, alternating with the current time off value.
n Turn the adjustment knob to adjust the time off to the desired value (in
minutes). Note that time off must be non-zero in order for the controller to operate the stage as a mist stage.
36 QM 1332.rev.00
HEATER SETTINGS
PRINCIPLE OF OPERATION
The graph below explains the operation of the heaters using sample values.
Heating
Heater B OFF
Heater B ON
Heater B
Heater A ON
Heater A
Heater A OFF
HEATER
B / ON
TEMP.
= 70oF
HEATER
A / ON
TEMP.
= 72oF
Room
Temperature
OFF
TEMP.
= 74oF
Set Point
= 75oF
If the room temperature rises:
- at 72oF: Heater B turns off.
- at 74oF: Heater A turns off.
If the room temperature falls:
- at 72oF: Heater A turns on.
- at 70oF: Heater B turns on.
QM 1332.rev.00
37
ST 5120
1
Adjusting the Heater Off Temperature
The heater off temperature can provide substantial energy savings if correctly adjusted according to the outside temperature. It is the temperature
at which the heating units turn off (see diagram above). The off temperature is bounded above by the set point plus 10oF and below by the set point
— 20oF.
n
Set selection knob to HEATER
A — OFF TEMP. The current
off temperature flashes on the
display.
n
Use the adjustment knob to adjust the off temperature to the
desired value.
2
Adjusting the Heater Starting Temperatures
The starting temperature is the temperature at which the heater turns on.
The Heater A starting temperature is bounded above by the off temperature
— 0.5oF and below by the off temperature — 20oF. The Heater B starting
temperature is bounded above by the Heater A starting temperature
— 0.5oF and below by the Heater A starting temperature — 20oF.
n
Set the selection knob to HEATER A — START TEMP. or HEATER
B — START TEMP. The current starting temperature for the heater
selected flashes on the display.
n
Use the adjustment knob to adjust the starting temperature to the
desired value.
38 QM 1332.rev.00
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 are defined
according to the set point as shown in the diagram below.
Room
Temperature
High Temperature Alarm
High Alarm Temperature
Set Point
Low Alarm Temperature
Time
1
Adjusting the Alarm Settings
The high and low alarm settings are specified as a temperature value. The
high alarm temperature ranges from set point + 0.5oF to set point + 40oF.
The low alarm temperature ranges from set point - 40oF to set point - 0.5oF.
n
Set the selection knob to ALARM
— LO / HIGH. The current low
alarm temperature flashes on the
display, alternating with the word
"LO".
n
Use the adjustment knob to set
the low alarm temperature to the
desired value.
n
Press the push-button. The current high alarm temperature flashes
on the display, alternating with the word "HI".
n
Use the adjustment knob to set the high alarm temperature to the
desired value.
QM 1332.rev.00
39
TROUBLESHOOTING GUIDE
PROBLEM
There is no
display.
CAUSE
SOLUTION
The circuit breaker
at the service panel
is off or tripped.
Correct the problem and reset
the circuit breaker.
The wiring is
incorrect.
Correct the wiring.
The voltage selector
switch is in the
wrong position.
Set the switch to the correct
position.
The display board
interconnect cable
is not properly
plugged into the
power supply
board.
Be sure the cable is firmly
plugged in.
The display
shows "P"
when the
parameter
selection knob
is set to ROOM.
A room probe is
connected improperly.
Correct the room probe
connection.
A room probe is
defective.
Refer to "defective probes"
The defective
probe pilot light
is on.
A room probe is
defective.
Refer to "defective probes"
40 QM 1332.rev.00
ST 5120
PROBLEM
The display
shows sudden
variations in the
room or outside
temperature.
The stage 1
variable speed
cooling fans are
not running.
CAUSE
SOLUTION
A variation in
resistance is
induced on a
probe.
Be sure the probes are dry.
Locate them away from drafts
and sources of radiant heating.
Be sure the outside probe is
installed correctly. Refer to
"Installing the outside probe"
There is electrical
noise near a probe
cable.
Isolate the probe cables from
all high voltage sources. Do
not route probe cables and
other power cables through
the same electrical knockout.
Do not run probe cables next
to other power cables. When
crossing other power cables,
cross at 90°.
The wiring is
incorrect.
Correct the wiring. Be sure two
different lines are connected to
each fan motor: line L1
modulated by the controller
should be combined with
another line (N for 115V or L2
for 230V) to activate the motor.
Also, be sure the stage 1
COMMON is supplied by line L1.
The stage 1 fuse is
open.
Correct the problem and
replace the fuse.
The display board
interconnect cable is
not properly plugged
into the power supply
board.
Be sure the cable is firmly
plugged in.
QM 1332.rev.00
41
ST 5120
PROBLEM
The stage 1
variable speed
cooling fans are
not running.
(continued)
The stage 1
variable speed
cooling fans run
erratically.
42 QM 1332.rev.00
CAUSE
SOLUTION
The minimum
speed is too low.
Adjust the minimum speed to
a higher value.
The fan motor is
defective.
Check if the motor is defective
by connecting it to an alternate
power supply. If it still is not
operating, replace the motor.
The selected motor
curve is inappropriate.
Select an appropriate motor
curve. Refer to "motor curves"
The stage 1 differential is too small.
Adjust the stage 1 differential
to a higher value.
The stage 1 time on
or time off is too
short.
Adjust the stage 1 time on or
time off to a higher value.
A variation in
resistance induced
on a room probe
causes this probe
to measure sudden
variations in the
room temperature.
Be sure the room probes are
dry. Locate them away from
drafts and sources of radiant
heating.
Electrical noise
near a room probe
cable causes this
probe to measure
sudden variations in
the room temperature.
Isolate the room probe cables
from all high voltage sources.
Do not route probe cables and
other power cables through
the same electrical knockout.
Do not run probe cables next
to other power cables. When
crossing other power cables,
cross at 90°.
ST 5120
PROBLEM
CAUSE
The stage 1
variable speed
cooling fans run
continuously
when the room
temperature is
below the room
set point
(minimum
ventilation
cycle).
The stage 1 time off
is set to zero.
Set the stage 1 time off to
a value other than zero.
The wiring is
incorrect.
Correct the wiring. Be sure
two different lines are connected to each fan motor: line
L1 modulated by the controller
should be combined with
another line (N for 115V or L2
for 230V) to activate the motor.
Also, be sure the
stage 1 COMMON is supplied
by line L1.
The mist is not
operating as
desired.
The mist time on
and time off were
incorrectly adjusted.
The mist time on and time off
are in minutes. Adjust the mist
time on and time off correctly.
The cooling
fans are not
running.
The wiring is
incorrect.
Correct the wiring. Be sure
two different lines are connected to each fan motor or
heater: the controller's output
line L1 should be combined
with another line
(N for 115V or L2 for 230V) to
activate the fan motor or
heater. Also, be sure the
stage's COMMON is supplied
by line L1.
The stage's fuse is
open.
Replace the fuse.
or
The heaters are
not turning on.
SOLUTION
QM 1332.rev.00
43
ST 5120
PROBLEM
The cooling
fans are not
running.
or
The heaters are
not turning on.
CAUSE
The display board
interconnect cable
is not properly
plugged into the
power supply
board.
Be sure the cable is firmly
plugged in.
The fan motor or
heater is defective.
Check if the motor or heater is
defective by connecting it to an
alternate power supply. If it still
is not operating, replace the
motor or heater.
The controller is
defective.
Listen to see if there is a
clicking sound when the stage
or heater pilot light turns on. If
there is no clicking sound,
contact your distributor to
repair the controller.
(continued)
44 QM 1332.rev.00
SOLUTION
TECHNICAL SPECIFICATIONS
Supply: - 115/230 VAC (-18%, +8%), 60 Hz, L1 same phases as Stage 1,
overload and overvoltage protection fuse F11-1A fast blow.
- 12 VDC for AC back-up supply; can activate stages 2-3 and alarm
if supplied with DC back-up voltage.
Stage 1: Variable output, 60 Hz, 10A FAN (3/4 HP/115 VAC) / (1.5 HP/
230VAC), fuse F1-15A slow blow.
Stage 2: ON-OFF output, 115/230 VAC, 60 Hz, 30VDC, 6A FAN,10A RES,
fuse F2-15A slow blow.
Stage 3: ON-OFF output, 115/230 VAC, 60 Hz, 30VDC, 6A FAN,10A RES,
fuse F3-15A slow blow.
Alarm: ON-OFF output, 115/230 VAC, 60 Hz, 30VDC, 3A, fuse F8-3A slow
blow.
Probes: Low voltage ( < 5V), isolated from the supply. Operating range:
-40.0° to 120.0°F (-40.0° to 48.9°C). Accuracy: 1.8oF (1oC) between 41o and
95oF (5o and 35oC).
Enclosure: ABS, moisture and dust-tight.
The room temperature where the controller is located MUST
ALWAYS REMAIN BETWEEN 32o AND 104oF (0o AND 40oC).
QM 1332.rev.00
45
FACTORY SETTINGS
PAR AMETER
Te m p e r a t u r e S e t P o i n t
Minimum Speed
FACTORY
SETTING
7 5 oF ( 2 3 . 9 oC )
-40 to 99.9
(-40 to 37.7
o
o
F
C)
40 %
10 % to 100 %
Ti me On
15 seconds
Ti me Off
0 seconds
0 to 900 seconds by
increments of 15
seconds
Stage 1
Bandwidth
S t a g e 2 S t a r t i n g Te m p .
S t a g e 3 S t a r t i n g Te m p .
3 . 0 oF ( 1 . 7 oC )
0 . 5 t o 2 0 oF
( 0 . 3 t o 1 1 . 1 oC )
8 0 oF ( 2 6 . 7 oC )
0 . 5 t o 2 0 oF
( 0 . 3 t o 1 1 . 1 oC ) f r o m
Bandwidth
8 2 oF ( 2 7 . 8 oC )
0 . 5 t o 2 0 oF
( 0 . 3 t o 1 1 . 1 oC ) f r o m
Stage 2 Starting
Te m p .
Ti me On
1 minute
Ti me Off
0 minutes
Mist
H e a t e r O f f Te m p e r a t u r e
Alarm
RANGE OF
VALUES
7 4 . 5 oF ( 2 3 . 6 oC )
L o w Te m p e r a t u r e
6 5 oF ( 1 8 . 3 oC )
High
Te m p e r a t u r e
8 7 oF ( 3 0 . 6 oC )
0 to 60 minutes by
increments of 1
minute
- 2 0 t o 1 0 oF
( - 1 1 . 1 t o 5 . 6 oC ) f r o m
Set Point
0 . 5 t o 4 0 oF
( 0 . 3 t o 2 2 . 2 oC ) f r o m
Set Point
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.
46 QM 1332.rev.00
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement