Specifications

Publication GMC-SG001E-EN-P — June 2001
Motors 6-51
Brake Specifications and Application Guidelines
The following section contains the N-Series brake motor specifications and motor application guidelines.
Specifications
Application Guidelines
The brakes offered as options on these servo motors are holding brakes designed to hold the motor shaft
at 0 rpm up to the rated brake holding torque. These spring-set type brakes release when voltage is
applied to the brake coil.
The brakes are not designed for stopping rotation of the motor shaft. Servo drive inputs should be used to
stop motor shaft rotation. The recommended method of stopping motor shaft rotation is to command the
servo drive to decelerate the motor to 0 rpm, and engage the brake after the servo drive has decelerated
the motor to 0 rpm.
If system main power fails, the brakes can withstand use as stopping brakes. However, use of the brakes
as stopping brakes creates rotational mechanical backlash that is potentially damaging to the system,
increases brake pad wear and reduces brake life. The brakes are not designed nor are they intended to be
used as a safety device.
A separate power source is required to disengage the brake. This power source may be controlled by the
servo motor controls, in addition to manual operator controls.
Encoder Data
The following section contains the N-Series encoder specifications.
Encoder Specifications
1
Standard line count before quadrature.
2
N-2300 encoder lacks Absolute Signal (ABS).
Note: Encoders are factory aligned. Do not adjust them outside the factory.
Motor
Series
Maximum Backlash
(brake engaged)
minutes
Holding Torque
N-m (lb-in.)
Coil Current at 24V DC
Amps
N-2300 31 0.56 (5) 0.28
N-3400 72 1.69 (15) 0.37
N-4200 36 3.39 (30) 0.37
N-5600 102 5.64 (50) 0.71
Motor
Series
Line
Count
Supply
Voltage
Supply
Current
Line Driver Line Driver Output Index Pulse
N-2300
1000
1, 2
5V DC
175 mA
Average
DS26C31TM
A, B, and I signals: Logic 1 = 2.5V DC minimum @ 20 mA DC
source, Logic 0 = 0.5V DC maximum @ 20 mA DC sink
No feature on shaft for
index pulse orientation.
N-3400
N-4200
N-5600
2000
1
5V DC
300 mA
Average
26LS31
HALL signals: Logic 1 = 2.5V DC minimum @ 1mA DC
source, Logic 0 = 0.5V DC maximum @ 5mA DC sink
When facing the motor,
the key is oriented
90°±10 clockwise
(mechanical) from the
connectors.