MHT258a (Engl.)9-15
(vi) Over current, output overcurrent
• Touch panel display
• Detection (example)
The output current from the amplifier to the motor exceeded a specified value.
• Cause, check and remedy
The power wiring to the motor is short-circuited or grounded.
As a general rule, minimum insulation resistance between motor terminals and ground (earth) terminal (symbol “E” or “ “) is about
1 [MΩ] at room temperature.
The motor winding resistance value between each phase, at room temperature, is given on the table below.
GYS□□□DC1 GYC□□□DC1
Motor type
101 201 401 101 201 401 751
Resistance value between phases [Ω] 4.6 2.2 0.72 7.2 4.1 1.8 0.68
9.4 Items to specify when faulty
If an alarm appeared, remedy it referring to 9.3.
When contacting us, specify the following items.
(a) Data on rating plate : Type, serial equipment No.
(b) Device configuration : Example, type of external braking resistor etc.
(c) Outline of mechanical equipment system driven by motor : Example, ball-screw feed, vertical drive, reduction speed ratio 1/2
(d) Fault contents
(i) Running duration (years)
(ii) Alarm occurrence frequency, conditions : Example, when a certain device operates, the motor steps
(iii) Alarm display contents
(iv) Whether reproducible
(v) While accelerating, rotating at constant speed or decelarating
(vi) Whether different between forward and reverse rotation of motor
(vii) Whether at particular conditions : Example, when [RUN] signal has been turned on. When advancing mechanical-table has come to a
particular position.
(viii) Whether trouble persists even after replacing the machine or amplifier with one of the same specification
9.5 Others informations
(1) Operating conditions : Refer to 3.
(a) Power-on
CAUTION
Do not touch the amplifier when the commercial power is supplied. Otherwise, there is a risk of electric shock.
(b)Specifications : Refer to 2.
(c) Operation
Do not repeatedly turn on and off the power supply to start and stop the motor.
(d) Radio noise : Refer to 3.2 (1) (b) (iv) and 10.4
The amplifier and motor are not protected from radio noise. Therefore, following devices may receive noises:
• AM radios near the amplifier or motor
• Wired broadcst, etc. near the wiring
• Measuring instruments or household appliances
To Next Page
Loading...