EB-10X Installation & Service Manual |
Wiring
17
Kollmorgen | kdn.kollmorgen.com | October 2020
2.6
Grounding
Ground the motor at either the amplifier motor terminal block or at the main ground point.
Connect shielded cables at one end only.
2.7
Inputs
The drive-up contact closure (internal) is provided at pins 10 and 20. When this internal
contact is closed, it indicates to the outside world (software) that the typical amplifier is ready
to operate. When open, it indicates it is in Inhibit mode. The contact is rated at 115 VAC at 2
amps.
The motor is provided with two normally closed thermostat reset devices
connected in series. They are auto-resetting devices intended to shut
the power down from the amplifier to limit the surface temperature of the
motor to prevent ignition in hazardous atmospheres.
The remote Inhibit allows the amplifier to be disabled without removing the main power.
When a contact is closed between pins 2 and 15 (D-common) the amplifier is placed in ready
to operate mode. These pins (2 & 15) are connected through the latched power down circuit
to the motor thermostat. The motor thermostat is an automatic resetting device used to shut
the power down from the controller should an over-temperature condition occur in the motor
windings. Connect the thermostat to a latched (locked-out) power down type circuit that
requires manual reset. This prevents inadvertent restarting of the motor when it cools down
below the thermostat's set value.
2.8
Preliminary Checks
Once the typical amplifier system has been installed and wired in, follow the steps below to
ensure proper
operation before the main power is applied.
2.8.1
Checking AC Input Voltage
Open the circuit breaker
or remove the fuses in the secondary of the large 3-phase isolation
transformer.
Apply power
. With an AC voltmeter, check the 3-phase secondary line-to-line voltage. The
voltage should be approximately 230 V
RMS
±10%.
Remove power
. Close the circuit breaker or replace the fuses in the secondary of the large
3-phase isolation transformer.
2.8.2
Checking the Typical Power Supply DC Output Voltage
Do not apply the 115 VAC. Apply power to the large 3-phase transformer only. With a DC
voltmeter, monitor the 325 VDC bus bars of the power supply and amplifier units. The voltage
from the power supply should be approximately ±325 VDC ±10%. Remove power.
