5. Speed Setting 6. Grow Time Trimmer
RD-122 3
５．Speed Setting
Caution
Set the speed after setting Current Adjustment Trimmer to MIN or
removing motor wire. Setting the speed during motion is dangerous
because it may result in serious result.
☆ How to set Low/High Speed of RD-122
Owing to the structure of the internal circuit, setting Low Speed
trimmer will make high speed change and vice versa.
Therefore, when setting oscillating frequency please follow the
below instructions.
Fig.5. Speed Setting Trimmers
１)Connect STOP/START terminal to GND potential.
２)Turn SPEED H/L terminal to High level (open) and then set High Speed trimmer to high
speed frequency that meets your application specifications.
３)Turn SPEED H/L terminal to Low level (connects to GND potential) and then set Low Speed
trimmer to low speed frequency that meets your application specifications.
４)Review 2 and 3 to verify whether the value meets your application specifications or not.
5-1 High Speed Trimmer
This trimmer is used for setting the high speed. Setting this trimmer can make the frequency
change. Turn SPEED H/L terminal to High level (open) and then set High Speed trimmer to your
desired speed frequency. (The Max. of the setting value is approx. 7,000pps＝2,100rpm/1.8ﾟ)
5-2 Low Speed Trimmer
This trimmer is used for setting the low speed. To set this pot, turn SPEED H/L terminal to Low
level (connects to GND potential) and then set low speed to your desired speed frequency.
６．Grow Time Trimmer
Trimmer to adjust the duration of time in which the motor’s rpm changes from the stationary state to
the rpm set for High Speed and then to the rpm set for the Low Speed.
Adjustable range: 200msec. to 2sec. (When SPEED H/L voltage is changed from 0 to 5Vdc or
from 5 to 0Vdc.)
Fig.6 GROW TIME
！
LOW GROW HIGH
SPEED TIME SPEED
－ ＋ L S － ＋
SPEED
TIME
LOW SPEED
Adjustable by Grow Time Trimmer
HIGH SPEED
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