Chapter 2 Wiring; Wiring - Delta HES Series User Manual

Upon opening the top cover of the Hybrid Servo Controller and reveal the wiring terminal bus, check if
the terminals of each Main circuit circuit and control loop circuit are labeled clearly. Pay attention to the
following wiring descriptions to avoid any incorrect connection.
The Main circuit power terminals R/L1, S/L2, and T/L3 of the Hybrid Servo Controller are for power
input. If the power supply is connected by accident to other terminals, the Hybrid Servo Controller
will be damaged. In addition, it is necessary to verify that the voltage/current rating of power supply
is within the numbers listed on the name plate.
The ground terminal must be grounded well, which can avoid being stricken by lightning or
occurrence of electrocution and minimize interference by noise.
The screw between each connection terminal and the wire must be tightened securely to avoid
sparking by getting loose from vibration.
If the wiring is to be changed, first step is to turn off the power of the Hybrid Servo
Controller, for it takes time for the DC filter capacitor in the internal loop to
completely discharge. To avoid any danger, the customer can wait for the charging
DANGER
indicator (READY light) to be of completely and measure the voltage with a DC
voltmeter. Make sure the measured voltage is below the safety value of 25Vdc
before starting the wiring task. If the user fails to let the Hybrid Servo Controller
completely discharge, residual voltage will build up internally, which will cause
short circuit and spark if wiring is conducted. Therefore, it is recommended that the
user should only conduct the wiring when there is no voltage to ensure his/her
safety.
The wiring task must be conducted only by professional personnel. Make sure that
the power is off before starting to avoid incidence such as electrocution.
During wiring, please follow the requirements of the electrical regulations to select
proper gauges and conduct wiring accordingly to ensure safety.
Check the following items after finishing the wiring:
1. Are all connections correct?
2. No loose wires?
3. No short-circuits between terminals or to ground?

Chapter 2 Wiring

2-1 Wiring

2-2 Wiring of Servo Oil Pump
2-3 Descriptions of Main circuit Terminals
2-4 Descriptions of Control Loop Terminals
2-1
Chapter 2 Wiring|HES Series