Installing the Servo Drive
3-5
631 Digital Servo Drive 07-01-08-02-E-V0500
Remove Terminal Cover by pressing here and pulling down
631
Using Cage Clamp Terminals
Remove the terminal cover as shown above.
Insert a flat-bladed screwdriver (size 3.5 mm max.) inside the smallest
hole. Lever the screwdriver, keeping it firmly pressed into the hole. The
cage will open.
Insert the stripped wire (5mm to 6mm/0.22in.) or wire crimp inside the
cage keeping the screwdriver in position.
Remove the screwdriver. Note the cage provides the correct force for a
secure
connection.
Motor Thermistor
Refer to Chapter 12: “Certification for the Servo Drive” - Solid State Motor Overload
Protection.
WARNING!
The servo drive thermistor connections are for SELV only.
Eurotherm servo motors series ACM 2n, ACR n and ACG are SELV,
other manufacturer’s motors may not be.
If you use a non-Eurotherm servo motor, make sure that the thermistor is insulated
to SELV from live parts inside the motor. If not, the thermistor signals have to be wired
separately and an additional isolation circuit must be provided before connecting to
X30.
Make sure that pins 2 and 6 of X30 are only served by SELV insulated cable leads.
631
motor
resolver cable (without thermistor connections)
SELV Isolation
thermistor wires
X30
Earth Fault Monitoring Systems
We do not recommend the use of circuit breakers (e.g. RCD, ELCB, GFCI), but where their use
is mandatory, they should:
•
Operate correctly with dc and ac protective earth currents (i.e. type B RCDs as in
Amendment 2 of IEC755).
•
Have adjustable trip amplitude and time characteristics to prevent nuisance tripping on
switch-on.
