RS1A01AL Sanyo Denki
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The Sanyo Denki RS1A01AL servo drive is part of the R SANMOTION Servo Drives series and has both main and control power ratings of AC200V. It features a battery-backup absolute encoder, an amplifier capacity of 15 Amps, and supports the ISO-11898 CAN bus standard with two RJ-45 ports. The drive weighs 1.0 kilogram and offers an NPN output type with 127 maximum nodes per segment.
Internal Product Review
The RS1A01AL is a Sanyo Denki servo drive built for AC200V main power with a 15 A amplifier capacity. Battery-backup absolute encoder support and ISO-11898 CAN bus compatibility make commissioning and network integration especially effective in motion control systems. Support for up to 127 nodes per segment adds excellent scalability for distributed servo architectures.
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Product Description:
The RS1A01AL is a servo amplifier manufactured by Sanyo Denki and supplied within the R SANMOTION Servo Drives series. It conditions the main AC power before delivering controlled current to a compatible rotary or linear servomotor. The amplifier exchanges motion commands over a CANopen fieldbus and processes position feedback from the connected motor. These functions support accurate current, speed, and position control in automated machinery.
The output stage is rated for a continuous current of 15 A, which is the maximum motor phase current the drive can supply without derating. Both the control and main circuits accept an input of 200 V AC, allowing the unit to share a single low-voltage power source with matched SANMOTION motors. Fieldbus signaling complies with the ISO 11898 CAN standard, and the preset transfer speed is 500 kbps for deterministic cyclic data exchange. Two front-mounted RJ-45 ports provide in-line wiring, allowing additional nodes to be connected in a daisy chain without external T-pieces. A battery-backed absolute encoder channel maintains position data through a power loss, while an incremental encoder channel reduces the number of conductors required for feedback wiring.
The incremental encoder interface uses a wire-saving design, minimizing the number of I/O terminals needed when pulse-train feedback is used. Bus propagation delays are controlled by limiting a 1 Mbps segment to 25 m, and each segment can support up to 127 devices before a repeater is required. The amplifier has a mass of 1.0 kg, which limits the load placed on cabinet mounting rails. The unit does not include an internal regeneration resistor, so a separate braking module is necessary when deceleration produces energy that must be dissipated. Its logic outputs use an NPN arrangement for direct connection to sinking PLC inputs. A 120 Ω terminating resistor can be engaged at the final drive in the CANopen chain to reduce signal reflections and preserve communication quality.
