Exlar Curtiss-Wright Tritex II Series, Installation And Service Manual

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Curtiss-Wright | TRITEX II AC 75 Rev. K PN61928 7/12/2022 51
Digital Output Specifications
Description Specification
Operating voltage range 0 to 30 V dc
On state maximum continuous current 100 mA
On state voltage drop (@ 50mA) .5 V typical
Short circuit protection (auto reset) .5 A
Update rate 1 ms
Actuator Brake Option
The actuators may be ordered with a brake option. This brake is
intended as a “parking brake” and is not intended for use as “stopping
brake”. The brake engages when the brake voltage is removed. Brake
voltage is 24 V +/- 10%. Since the Brake and I/O power supplies are
interconnected, use of a brake places additional voltage and power
constraints on the I/O supply. The negative side of the brake is
connected to the IO common. The brake +24 V can be connected
directly to Brk +24 V or through customer interlocks.
When Brake +24 V is applied the brake follows the Tritex Enable
function with time delays added. Starting from a disabled status, with
brake engaged, when the drive enables, a 0 velocity command holds the
motor in position and the voltage to the brake is removed. A 0.2 sec time
delay occurs before motion is allowed. Starting from the enabled state,
with the brake released or when the drive is disabled for any reason the
drive will immediately apply full current, bringing the motor to a an abrupt
stop and engage the brake, then after a .3 sec delay the drive will be
disabled. Brake Release Active status can be assigned to an output, the
brake can be manually released, overriding the drives control of the
brake, by assigning the Brake override Input function to an Input. See I/O
Assignment section of the Software. In some cases it may be required to
release the brake without AC power applied, in this case an external
+24 V supply is required, the external 24V supply will supply brake
voltage and back up logic supply for the brake override input to function.