Parker EX Series User Manual

120 – Pvd3665_Gb_Ex_August 2022
3.10. Brake option
Caution: The holding brake is used to completely immobilize the servomotor
under load. It is not designed to be used for repeated dynamic braking ;
dynamic braking must only be used in the case of an emergency stop and
with a limited occurance depending on the load inertia and speed.
The standard brake power supply is 24 Vcc DC ± 10%.
Follow the polarity and the permissible voltage, and use shielded cables.
A 220 µF capacitor avoids untimely braking if the 24 V voltage is disturbed by the external
relay. Check the voltage value once this capacitor has been fitted. The RC network (220 Ω,
0.1 µF) is needed to eliminate interference produced by the brake coil.
Position the contactor in the DC circuit to reduce brake response times. Follow the
connection instructions taking the brake polarisation into account.
Motor
Static
torque
@20°C
Static
torque
@100°C
Power
Engaging
time
Disengaging
time
Extra Inertia
Angular
backlash
(N.m)
(N.m)
(W)
(ms)
(ms)
(Kg.m².10
-5
)
(°)
EX3
2
1.8
11
13
25
0.68
0
EX4
5.5
4
12
17
35
1.8
0
EX6
12
8
18
28
40
5.4
0
EX8
36
32
26
45
100
55.6
0
Table with typical values

Parker EX Series Specifications

General

Fuel Type	Gasoline
Control Type	Electronic
Valves per Cylinder	4
Fuel System	Fuel Injected
Bore x Stroke	86 mm x 86 mm