15-2
IM 2560A-01EN
15.2 Error Indication
Various displays on the 2560A blinks or turns off if a setting is outside the selectable range or if a
setting inconsistent with other settings is specified. This section explains the indications, possible
causes, and their corrective actions.
Main Setting
1. The polarity, main setting, or unit display on the main setting display blinks. In high resolution mode, the most
significant digit of the deviation display also blinks. The output turns off and cannot be turned on.
Cause
The range, temperature type, polarity, or user-defined range change caused the main setting to
go outside the selectable range.
Examples:
• Changing the range to 30 A when negative polarity is set at 10 A range
• Changing the temperature type to E when the temperature type is K and the main setting is
+1300.0°C
• Changing the user definition to “-120, 120, 0” when the user definition is “-9999.9, 9999.9, 0”
and the main setting is +9999.9°C
Correction
Operate a main setting dial. The main setting will change to the maximum setting in the
appropriate polarity of the range or temperature type or within the selectable range. If changing
the polarity would cause the value to be in the selectable range and you change the polarity,
blinking changes to solid.
2. The main setting on the main setting display shows “– – – –.–” blinking, and the polarity and unit turn off. The
output cannot be turned on.
Cause
The temperature type was set to TC USER or RTD USER when user-defined thermocouple or
RTD is not available.
Examples:
Deleting user definitions with a communication command
Correction
Set the temperature type to a type other than TC USER or RTD USER, or create user
definitions.
3. The polarity, main setting, or unit display on the main setting display blinks. The output turns off and cannot be
turned on.
Cause
Main setting (MAX) and main setting (MIN) are reversed.
Examples:
If the range is 10 V, main setting (MAX) is +5.0000V, and main setting (MIN) is -10.0000V, you
change main setting (MIN) to a positive value.
Correction
Change the main setting so that the main setting (MAX) and main setting (MIN) are within the
selectable range and that they are not reversed.
Output
1. A relevant error code is displayed blinking on the output display. If multiple errors are occurring, error codes are
displayed one by one at the blinking interval. The polarity and unit indicators on the output display turn off. The
output turns off.
Cause
If a cause of a warning code (see section 15.3) is detected, and the 2560A trips.
Correction
Flip the OUTPUT switch down (OFF) to clear the warning display. After eliminating the cause,
flip the OUTPUT switch up (ON) to clear the warning display and turn the output on.
2. The output value and the polarity and unit indicators on the output display blink. The output display shows
the lower limit that can be sourced blinking. The output remains on, and the lower limit that can be sourced is
output.
Cause
When the output value is less than the lower limit that can be sourced
Example:
When the range is 400 Ω and the output value determined by the main setting, output divider,
and deviation settings is 1 Ω or less.
Correction
Change the main setting, output divider, or deviation so that the output value is 1 Ω or higher.
3. The output value and the polarity and unit indicators on the output display blink. The output display shows 43°C
blinking. The output on state is maintained, and the thermoelectromotive force of the temperature determined
by the main setting, output divider, and deviation settings is output.
Cause
When the thermocouple type is B and the output value determined by the main setting, output
divider, and deviation settings is 43°C or less.
(Because the range less than 43°C for thermocouple type B contains two temperature points
that correspond to the same thermoelectromotive force.)
Correction
Change the main setting, output divider, or deviation so that the output value is 43°C or higher.
