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Error Display Information

14

The chart below shows the possible error displays on the Solo Basic temperature controller. 

Controller Error Display

Display Position

Display

Meaning

Cause

Corrective Action

PV

no

Cont

No sensor input

The input terminals 

are open.

Check the input wiring. If the problem still exists, replace the 

sensor or the controller.

SV

PV

sen

err

Sensor type error

Temperature is out of 

range for sensor type

Check sensor type and its condition. If damaged or wrong, 

replace and update settings. Check actual condition to make 

sure temperature is within sensor range.

SV

Alarm Outputs

For models equipped with alarms there are two alarm outputs.  Each alarm can be programmed for one of nine 
different alarm types. To set up the first alarm output, press the 

;

 

button for three seconds. Press the 

 

button repeatedly until the parameter 

ALA1

 appears. If the controller is configured for dual output control, 

parameter 

ALA1

 is not available. Use the 

.

 

button to choose the set value for the desired alarm type. Refer 

to the chart below for alarm type information. Press the 

;

 button to save the selected value. If additional 

alarm outputs are required press the 

 

button to proceed to 

ALA2

. Follow the same procedure to program 

the additional alarm. When the desired alarm(s) are programmed, press the 

;

 button repeatedly until the 

controller returns to the main screen.
The alarm output limits are controlled by the parameters 

Al

n

and 

Al

n

l

, where “n” corresponds to the 

alarm output chosen. After selecting the desired alarm, press the 

 

button repeatedly until the parameter 

Al

n

and/or 

Al

n

appears. Use the 

.

 and 

buttons to enter the high and/or low values for each 

alarm outputs selected. Press the 

;

 button to save each selected value. Press the 

;

 button again to 

return to the controller main screen.

For advanced alarm options 

Al1o

 / 

al2o

 and alarm delay 

al1d

 / 

al2d

 please reference the parameter 

descriptions in chapter 3 of the user manual.

ALA1

 and 

ALA2

 are both SPST resistive load 3A @ 250 VAC, normally open relay outputs with a shared 

common.

13

Set Value

Alarm Type

Alarm Output Operation

0

Alarm function disabled

Output is OFF

1

Deviation upper- and lower-limit:

Alarm output activates when PV value is higher than the setting value SV+(AL-H) or 

lower than the setting value SV-(AL-L).

 

ON

OFF

SV-(AL-L)

SV

SV+(AL-H)

2

Deviation upper limit:

Alarm output activates when PV value is higher than the setting value SV+(AL-H).

ON

OFF

SV

SV+(AL-H)

3

Deviation lower limit:

Alarm output activates when PV value is lower than the setting value SV-(AL-L).

 

ON

OFF

SV-(AL-L)

SV

4

Absolute value upper and lower limit:

Alarm output activates when PV value is higher than the setting value AL-H or lower 

than the setting value AL-L.

 

ON

OFF

AL-L

AL-H

5

Absolute value upper limit:

Alarm output activates when PV value is higher than the setting value AL-H.

 

ON

OFF

AL-H

6

Absolute value lower limit:

Alarm output activates when PV value is lower than the setting value AL-L.

ON

OFF

AL-L

7

Hysteresis upper limit alarm output:

Alarm output activates when PV value is higher than the setting value SV+(AL-H). The 

alarm output turns OFF when the PV value is lower than the setting value SV+(AL-L).

ON

OFF

 

SV    SV+(AL-L)   SV+(AL-H)

8

Hysteresis lower limit alarm output:

Alarm output activates when PV value is lower than the setting value SV-(AL-H). The 

alarm output turns OFF when the PV value is higher than the setting value SV-(AL-L).

ON

OFF

 SV-(AL-H)     SV-(AL-L)   SV

9

Disconnection Alarm: This alarm output is enabled if the sensor connection is  

incorrect or has been disconnected.

Parameter Default Settings

15

Parameter Default Settings

Display

Description

Default Setting

1234

Use 

.

 or 

,

 to set temperature set point. Press 

 to switch digits and 

;

 to set value.

r-S

RUN/STOP: Control setting RUN/STOP

RUN

SP

SELECT POINT: Decimal point setting (0: integer; 1: one decimal point)

0

LoC

LOCK: Setting lock mode (LOCK1: all; LOCK2: only SV changes are allowed)

OFF

AL1H

ALARM1 HIGH: Upper limit alarm 1 (display according to the setting in ALARM mode)

4.0

AL1L

ALARM1 LOW: Lower limit alarm 1 (display according to the setting in ALARM mode)

4.0

AL2H

ALARM2 HIGH: Upper limit alarm 2 (display according to the setting in ALARM mode)

4.0

AL2L

ALARM2 LOW: Lower limit alarm 2 (display according to the setting in ALARM mode)

4.0

out1

OUT1: Display and adjust output value of 1st output group

0.0

out2

OUT2: Display and adjust output value of 2nd output group (display when 

s-hC

 is set to a dual 

output mode)

0.0

o1ma

OUT1 MAX.: Upper limit % of 1st output group

100.0

o1mC

OUT1 MIN.: Lower limit % of 1st output group

0.0

o2mA

OUT2 MAX: Upper limit % of 2nd output group (display when 

s-hC

 is set to a dual output mode)

100.0

o2mi

OUT2 MIN: Lower limit % of 2nd output group (display when 

s-hC

 is set to a dual output mode)

0.0

inpt

INPUT: Set input type (refer to section 11 for a list of supported temperature sensors)

K

tpun

TEMP. UNIT: Set temperature unit C/F

C

tp-h

"TEMP. HIGH: Set up upper temperature limit 

(the upper limit setting is different for different types of sensors)"

1300

tp-l

"TEMP. LOW: Set up lower temperature limit 

(the lower limit setting is different for different types of sensors)"

-200

Ctrl

CONTROL: Select control modes (3 different modes: ON-OFF, PID, and MANUAL)

PID

S-HC

SELECT HEAT/COOL: Select heating, cooling or dual-output heating and cooling.

H1

ALA1

ALARM1 SET: Set up Alarm 1 mode (refer to section 13 "Alarm Outputs")

0

Al1o

ALARM1 OPTION: Set up Alarm 1 options

0

al1d

ALARM1 DELAY: Set up Alarm 1 delay

0

ala2

ALARM2 SET: Set up Alarm 2 mode (refer to section 13 "Alarm Outputs")

0

al2o

ALARM2 OPTION: Set up Alarm 2 options

0

al2d

ALARM2 DELAY: Set up Alarm 2 delay

0

at

AT: Auto tuning (display when setting 

Ctrl

 = PID/RUN)

OFF

p

P: Proportional Band (display when setting 

Ctrl

 = PID automatically set after auto tuning)

30.0

i

I: Integral Time (display when setting 

Ctrl

 = PID automatically set after auto tuning)

120

d

D: Deviation Time (display when setting 

Ctrl

 = PID automatically set after auto tuning)

30

pdof

PD OFFSET: PD offset when Integral = 0 to eliminate a consistent deviation (display when setting 

Ctrl

 = PID automatically set after auto tuning)

50.0

o1-s

OUT1 HYSTERESIS: Adjust Output 1 hysteresis (when 

Ctrl

 = ON/OFF)

0

o2-s

OUT2 HYSTERESIS: Adjust Output 2 hysteresis (when 

Ctrl

 = ON/OFF)

0

o1-h

OUT1 HEAT: Heating control cycle for Output 1 (when 

Ctrl

 = PID/MANUAL)

Output type:  

C: 1 sec 

V: 5 sec 

R: 20 sec

o1-C

OUT1 COOL: Cooling control cycle for Output 1 (when 

Ctrl

 = PID/MANUAL)

o2-h

OUT2 HEAT: Heating control cycle for Output 2 (when 

Ctrl

 = PID/MANUAL)

o2-C

OUT2 COOL: Cooling control cycle for Output 2 (when 

Ctrl

 = PID/MANUAL)

Coef

COEF: Proportional band coefficient of Output 1 against Output 2 (when 

Ctrl

 = PID and when 

in dual output control)

1.00

dead

DEAD: Set up deadband (when 

Ctrl

 is not set to MANUAL and when in dual output)

0

pv-f

PV FILTER: Set up input filter factor of PV

2

pv-r

PV RANGE: Set up input filter range of PV

1.00

pvof

PV OFFSET: Adjust input compensation of PV

0

pv6a

PV GAIN: Adjust input gain of PV

0.000

a1ma

ANALOG OUT1 MAX.: Adjust upper limit compensation for analog Output 1 (1 scale = 1 μA)

0

a1mi

ANALOG OUT1 MIN.: Adjust lower limit compensation for analog Output 1 (1 scale = 1 μA)

0

Notes:

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