Timing Chart; Short Time Cycle Operation And Braking Current - Oriental motor DSC Series Operating Manual

Operation

6.6 Timing chart

This is an example of a timing chart.
Example: 1200 r/min is set in the operation data No.0 and 100 r/min is set in the operating data No.1.
FWD input
REV input
FREE input
M0 input
Forward direction
Motor movement
Reverse direction
Note Make sure each signal remains ON for at least 10 ms.

6.7 Short time cycle operation and braking current

„ Repeated cycle of operation/instantaneous stop
When an operation and instantaneous stop of the motor are repeated in short cycles, the rise in motor temperature will
increase.
Use the motor in a condition where the motor case temperature does not exceed 90 °C (194 °F).
Use the motor at the repetition cycle shown below.
6 W to 40 W: 2 seconds (running 1 second, stopping 1 second)
60 W and 90 W: 4 seconds (running 2 seconds, stopping 2 seconds)
Measure to check the motor case temperature using a thermometer, thermo tape or thermocouple.
Note Make sure that the motor case temperature does not exceed 90 °C (194 °F) when operating the
motor.
Operation exceeding case temperature 90 °C (194 °F) may significantly deteriorate the coils and
ball bearings of the motor and shorten the motor's life span.
„ Brake current
When stopping the motor instantaneously, the large braking current shown in the table flows through the AC power
lines for 0.4 seconds. If the FWD input or REV input is turned ON while the braking current flows, the braking
current will stop flowing and the motor will rotate.
Select a breaker and AC power supply capacitance for the equipment in consideration of the braking current (peak
value) in the table.
Motor
output power
6 W
15 W
25 W
40 W
60 W
90 W
Note Do not turn off the power supply while the braking current is flowed.
Doing so may damage to the speed controller.
−22−
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Operation/
Speed switching/
Instantaneous stop
Stop
1200 r/min
100 r/min
Brake current (peak value)
Single-phase 100/110/115 V Single-phase 200/220/230 V
2 A
4 A
8 A
12 A
21 A
29 A
Operation/ Instantaneous
bi-directional operation
1 A
3 A
4 A
7 A
10 A
13 A
Operation/
Coasting stop