Troubleshooting Alarms - YASKAWA Sigma-7S Series Product Manual

6.1.2

Troubleshooting Alarms

This section provides information on the causes of and corrections for alarms related to the
dynamic brake hardware option specifications. Contact your Yaskawa representative if you
cannot solve a problem with the corrections given in the table.
Alarm Number:
Alarm Name
A.042:
Parameter Com-
bination Error
6.1 Alarms Related to the Dynamic Brake Hardware Option Specifications
Possible Cause
The speed of program
jogging went below the
Check to see if the
setting range when the
electronic gear ratio
detection conditions
(Pn20E/Pn210) or the
are satisfied.
Servomotor was
changed.
The speed of program
jogging went below the
Check to see if the
setting range when
detection conditions
Pn533 or Pn585 (Pro-
are satisfied.
gram Jogging Speed)
was changed.
The movement speed of
advanced autotuning
Check to see if the
went below the setting
range when the electronic
detection conditions
gear ratio (Pn20E/ Pn210)
are satisfied.
or the Servomotor was
changed.
• Pn601 (Dynamic
Pn001 (Basic Function
Select Switch 1), Pn601
(Dynamic Brake Resistor
Allowable Energy Con-
• Pn601 (Dynamic
sumption), and Pn604
(Dynamic Brake Resis-
tance) are not set cor-
rectly.
Confirmation
Decrease the setting of
*1
the electronic gear ratio
(Pn20E/Pn210).
Increase the setting of
*1
Pn533 or Pn585.
Decrease the setting of
*2
the electronic gear ratio
(Pn20E/Pn210).
Brake Resistor Allow-
able Energy Con-
sumption) or Pn604
(Dynamic Brake
Resistance) is set to
0, even though using
the dynamic brake to
stop is specified in
Set Pn001 (Basic Func-
the parameters
tion Select Switch 1),
(Pn001 = n.0 or
Pn601 (Dynamic Brake
Pn001 = n.1).
Resistor Allowable Energy
Consumption), and Pn604
Brake Resistor Allow-
(Dynamic Brake Resis-
able Energy Con-
tance) to the correct val-
sumption) or Pn604
ues.
(Dynamic Brake
Resistance) is not set
to 0, even though
coasting the motor to
stop without using
the dynamic brake is
specified in the
parameters (Pn001 =
n.2).

6.1.2 Troubleshooting Alarms

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