16
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Variable-speed Range of Brushless-inverter
(Torque at high speed can be used at low speed as well.)
Check if speed control on brushless-inverter operating panel has RED ZONE in high speed area or not.
Variable-speed range depends on speed control type.
(1) Speed Control with RED ZONE (necessary to use carefully)
Nominal speed (motor rotation: 2300 r/min) is determined as the lower limit of RED ZONE. Variable-
speed range up to the lower limit of RED ZONE is 1:76 (motor rotation: 30-2300 r/min).
By using RED ZONE up to the upper limit, it is possible to vary speed up to 1.3 times of nominal speed
(variable-speed range: 1:100, motor rotation: 30-3000r/min).
However, some models cannot be used in RED ZONE, so use the machine within the maximum speed
shown in the catalogue.
NOTE: Since motor rotation increases as the speed gets closer to the upper limit of RED ZONE, this will
increase noise and shorten service life of gear head. Use the machine at appropriate speed to
avoid these troubles.
(2) Speed Control without RED ZONE
Nominal speed (motor rotation: 2000 r/min) is determined as the upper limit. Variable-speed range is
1:66 (motor rotation: 30-2000 r/min).
This applies to machines using vertical-axial gear head, SMBM model (curve belt type) or cases for which
high-speed rotation is inappropriate.
NOTE: Variable-speed range is limited by the setting device B. When the setting device B is initialized,
reset the upper l
imit to motor rotation of 2000r/min. → For details, refer to “Brushless
-inverter
instruction manual”, appendix.
■
Starting and Stopping the Conveyor by External Signals
When starting and stopping the conveyor frequently in a short period (tact operation etc.), it is impossible
to start and stop the machine by turning on/off the power supply. (The controller may get damaged and
trip.) In this case be sure to start and stop the machine by external signals. For start and stop circuit by
external signals, make connection to external control circuit terminals on rear of brushless-inverter.
NOTE: Do not start and stop the conveyor excessively frequently. It may cause machine failure or shorten
its service life.
NOTE: 1. Be sure to ground earth. (D-type grounding
, 100Ω or less, φ1.6mm or more)
2. Noise filter, NFB, etc. should be set up by user.
3. When making connection to external control terminals, use special cable for external control
(optional).
4. For reversible operation by external signals, set rotation-direction selecting switch to CCW.
●
Brushless-inverter operating panel
Speed control with RED ZONE
Speed control
Alarm LED (red)
Power LED (green)
Rotation-direction
selecting switch
(CW/CCW)
RED ZONE
(necessary to use
carefully)
This border is standard.
(If accurate speed required,
actually measure speed
or use setting device B.)
RUN/STOP switch
Speed control without RED ZONE
Speed control
Alarm LED (red)
Power LED (green)
Rotation-direction
selecting switch
(CW/CCW)
RUN/STOP switch
Summary of Contents for S-CON MINI-Z Series
Page 1: ...1 S CON MINI Z Series OPERATING AND SERVICE MANUAL...
Page 35: ...35 MEMO...
