1. Features 2. Specifications 3. Part Name
RD-122 1
INSTRUCTION MANUAL FOR RD-122
1.Features
・ Can drive 1.3A/phase motor
・ Large supply voltage range (18 to 40VDC)
・ Circuit protection to protect against low voltage
・ Auto current down circuit to reduce heat generation when motor is stationary
・ Built-in oscillator makes PLC - or computer – control possible
2.Specifications
Supply voltage Single 18 to 40VDC (including ripple)
Supply current Approx. 2.4 times rated coil current of motor (max.)
Motor current 0 to 1.3A/phase (Adjustable by Current Adjustment Trimmer)
Drive method Unipolar, constant current chopper method
Excitation method Full step(2P)
Auto. current down 50% of the rated current after about 0.3 seconds of inactivity
Protective circuitry Low voltage protection
Oscillating frequency 7 kpps max.
Accel.,/Decel. time 200msec to 2sec
(when you change SPEED H/L terminal from 0V to 5V.or from 5V to 0V)
Speed change function Digital (High/Low)
Weight Approx. 250g (8.8oz.)
Outside dimensions 27.5H x 105W x 56Dmm (1.1”H x 4.1”W x 2.2”D)
3.Part Name
Fig.1. Name Plate
GND
010
DC
-+
S
L-+
CLOCKOUT
FREE
SPEED H/L
CW/CCW
STOP/START
GND
CURRENT
18V-
40V
LOW
SPEED
GROW
TIME
HIGH
SPEED
C1
C2
A
A
B
B
2P PULSE MOTOR DRIVER
RD-122
MADE IN JAPAN
POWER SUPPLY
MOTOR OUTPUT
INPUT/ OUTPUT
CURRENT Adjustment Trimmer
GROW TIME Trimmer
LOW SPEED Trimmer HIGH SPEED Trimmer