- 10 -
10-3. Hardware error (current detection / alarm output function [optional])
A hardware error alarm occurs when a thyristor error occurs (current continues to flow even if the thyristor device shorts and control input is 0%).
Output stops when an alarm occurs. The front display (status display) displays
and the parameter display displays
.
When the source of the error has been eliminated, the
,
alarm display goes off and output is automatically restored.
When a hardware error alarm is output to alarm contact output (AL), set key sequence
‘
1-4. Hardware error alarm.
’
CAUTION
Avoid conducting electricity with no load. If a hardware error alarm occurs even if a load is connected, repair is required.
Contact your nearest Shimaden agent.
10-4. Heater break (current detection / alarm output function [optional]
Function that detects load heater break. A heater break alarm occurs when the current drops below the preset heater break alarm current value.
Output continues when an alarm occurs. The front display (status display) displays
.
When a heater break alarm is output to alarm contact output (AL), set key sequence
‘
1-5. Heater break alarm.
’
If alarm cannot be output because of unstable operation when booting, etc., you can disable HB alarm output by key sequence
‘
2-2. Di function selection.
’
NOTE: As for heater break detection point, heater break standard values are set based on power supply voltage or output operation
amount implemented by key sequence
‘
3-3. Heater break judgment standard setting.
’
If the power supply voltage or output operation amount at that point in time is other than the set condition, operation may deviate from
the preset values for heater break alarm operation.
10-5. Input error
An input error alarm occurs if control input is less than -10% or over 110% of the setting range. In the case of 0
–
10 V DC, however, control input less
than 0% cannot be detected, so less than -10% input error alarm does not occur.
Output continues even if an alarm occurs. You cannot output input error alarm to an alarm contact output destination (AL).
Alarm display
is displayed on the front display (status display).
Key sequence
‘
0-0. Output monitor (basic screen)
’
display does not display less than 0% or more than 100%.
Key sequence
‘
0-2. Control input
’
display displays
or
if control input is less than -10%, and output becomes ramp lower limit
value. If 110% is exceeded,
is displayed, and output becomes ramp higher limit value (display differs according to type of control input).
You can set so input error is not displayed by key sequence
‘
2-6. Input error display setting.
’
10-6. Alarm output (current detection / alarm output function [optional])
You can use contact output (relay a contact, 240V AC / 1 A) as a function to notify alarm occurrence.
Output is on when in alarm status.
You can select whether to output an alarm for each type of alarm. (Multiple selections possible)
Alarm output type and terminal layout
Alarm contact
output
10
9
AL1
AL2
Alarm
ALARM
OUTPUT
Output type
Contact output
(relay a contact)
Terminal
symbol
AL1
AL2
Terminal
block No.
9
10
