Operating The Motor - Omron MX2 DEVICENET OPTION BOARD User Manual

Operating the Motor

4-2 Operating the Motor
4-2-1 Starting the Motor
Step 1
Step 2
Step 3
Step 4
4-2-2 Changing Direction
Step 5
4-2-3 Stopping the Motor – Decelerated stop
Step 6
22
The product will be used to control an adjustable speed drive connected to
high voltage sources and rotating machinery that is inherently dangerous if
not operated safely. Interlock all energy sources, hazardous locations, and
guards in order to restrict the exposure of personnel to hazards. The adjust-
able speed drive may start the motor without warning.
Signs on the equipment installation must be posted to this effect. A familiarity
with auto-restart settings is a requirement when controlling adjustable speed
drives. Failure of external or ancillary components may cause intermittent sys-
tem operation, i.e., the system may start the motor without warning or may not
stop on command. Improperly designed or improperly installed system inter-
locks and permissions may render a motor unable to start or stop on com-
mand.
Set A001 = 4 and A002 = 4 so that the Inverter can be controlled using the
DeviceNet Option Board.
Note The net control (CTR) and net reference (REF) override bits in the 1
word can be used to override A001 and A002.
When these bits are set, it has the same effect as temporarily setting
A001 = 4 and A002 = 4. Clearing these bits removes the override, and the
Inverter sources are once again determined by these registers.
Please note in case the inverter has version AAAA, override is not supported
for A002 = 2.
Set F002 and F003 for adjusting the acceleration and deceleration time of the
motor. Refer to MX2 User's manual (Cat. No. I570) section B-4.
Set the Rotation Speed Reference (see Appendix B) of the Inverter in the 2
I/O output word to 10.00 Hz.
Set the FWD bit to put the Inverter in run mode. The RUN indicator on the
Inverter should light up at this point. If this is not the case, check your source
selection (please refer to section 3-2 step 5).
The motor accelerates until it reaches the desired frequency. Notice that the
ARF bit is set once the inverter has reached the desired Rotation Speed Ref-
erence.
Clear the FWD bit and set the REV bit.
The motor decelerates stops and then accelerates in the opposite direction.
ARF bit clears as soon as the Rotation Speed Reference is changed. Once
the new Rotation Speed Reference is reached, ARF bit is set again.
Clear the run bits (FWD or REV) to bring the motor to a controlled (deceler-
ated) stop.
The motor decelerates, and comes to a stop. ARF bit clears as soon as the
run bit is cleared.
Before continuing set Rotation Speed Reference to 0 Hz.
Note The motor can also be brought to a stop by setting Rotation Speed Reference
to 0 Hz and leaving the run bits set. The Inverter will however stay in run mode
once the motor has reached 0 Hz.
Section 4-2
st
output
nd