YASKAWA SGDH User Manual page 371

Designing a Power ON Sequence
IMPORTANT
Note the following points when designing the power ON sequence.
• Design the power ON sequence so that main circuit power supply is turned OFF when a servo alarm signal
is output. See the previous circuit figure.
• Hold the power ON button for at least two seconds. The SERVOPACK will output (1Ry is OFF) a servo
alarm signal for two seconds or less when power is turned ON. This is required in order to initialize the
SERVOPACK.
• Select the power supply specifications for the parts in accordance with the input power supply.
Harmonic Suppression
If another device requires for harmonic suppression, connect the DC reactor to the DC main circuit side on
the SERVOPACK. For connecting examples, refer to 6.4.8 DC Reactor for Harmonic Suppression.
(5) DC Power Supply Input
• SGDH SERVOPACK is applicable for both AC and DC power supply input.
However, if the DC power supply input supplies a voltage without setting '1' (for DC power supply input) in
the parameter Pn001.2, the SERVOPACK's internal elements will burn and may cause fire or malfunction.
When using the SERVOPACK with DC power supply input, confirm the following setting of parameters.
When using the SGDH SERVOPACK with DC power supply input, use the following power supply and set the
parameter Pn001.2 for '1'. Also, read carefully to the following 'Important' section.
1. Servomotor returns the regenerative energy to the power supply when regenerating. SERVOPACK does
IMPORTANT
not regenerate with DC power supply input specifications, so regenerate the energy on the power supply
side.
2. Take appropriate measures to ensure that a high charging current stays inside the SERVOPACK when
power is OFF.
(a) Main Circuit and Control Power Supply Input
The following shows the connection for the main power supply and the control power supply.
Terminal Symbol
1 or
L1C，L2C
WARNING
Name
Main circuit plus 270 V to 320 VDC
terminal
130 to 155 VDC for SGDH-
Main circuit minus 0 V
terminal
Control power 270 to 320 VDC, without polarity
supply input terminal
130 to 155 VDC for SGDH-
6-7
2.0 s max.
Power supply
Servo alarm (ALM)
output signal
Functions
BE SERVOPACK with 100 V input
BE SERVOPACK with 100 V input
6.1 Wiring Main Circuit
6