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EB-20X Installation & Service Manual | Wiring
Notes for Typical Motor Wiring
1. The motor thermostat is an automatic resetting device and should be connected into a
latched (lock-out) power down type circuit.
2. Thermostat to be wired with twisted pair.
3. Energize the brake before switching the motor on and while it is in operation. For proper
operation, use an electrical interlock circuit to ensure that the brake is not engaged while the
motor is energized.
Model
EB-20X-X-XX-B2
EB-20X-X-XX-B3
4. Application resolver leads will exit at a different location from system resolver leads.
2. 5
GROUNDING
Ground the motor at the amplifier motor terminal block or at the main ground point. Connect
shielded cables at one end only. Butt the other end.
2. 6
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 is an indication that it is in the inhibit mode. The contact is rated at 115 VAC at 2
amps.
The remote inhibit disables the amplifier without removing the main power. When a contact is
closed between pins (2 and 15) D common, the amplifier is placed in drive-up or ready-to-operate
mode. Opening the contact places the amplifier in the inhibit, or non-operable mode. These pins
(2 and 15) are connected through the latched power down circuit to the motor thermostat (see B-
84470). The motor thermostat is an automatic resetting device that is 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 a manual
reset. This prevents inadvertent restart of the motor when it cools down below the thermostats set
value.
2. 7
PRELIMINARY CHECKS
Once the typical amplifier system has been installed and wired in, use the following steps to
ensure proper operation before the main power is applied.
14
Kollmorgen | kdn.kollmorgen.com | September 2020
Holding VDC
90
24
The motor is provided with two, normally-closed thermostat reset
devices connected in series. They are auto-resetting devices intended
to shut off power from the amplifier to limit the surface temperature of
the motor and prevent ignition in hazardous atmospheres.
Holding ADC
0.09
0.52
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