About 1901-1551

The 1901-1551 ULTRA 100 Digital Servo Drive with Indexing by Allen-Bradley is a single-axis, digital, and positioning servo drive, which provides microprocessor-based digital control and performance for a wide range of applications. The 1901-1551 is an indexing drive with digitally closed current and velocity controls, and it employs the Windows-based GML Ultra Software which allows for easy programming, setup, and troubleshooting. The drive has an input current of 5A at 100 to 240V AC (single-phase), and it has an output current of 2.5A, which peaks at 7.5A, with an output power of 0.5kW. The 1901-1551 ULTRA provides digital Torque, Velocity, and Position Loop controls, with a maximum velocity loop of 300Hz, and with 1ms/125µs position/current loop. It has 4 optically 12 to 24V DC active high digital inputs, configured for selectable digital inputs (start indexing, start homing, reverse enable, etc), and it also has 2 optically-isolated, and short-circuit protected 12 to 24V DC digital outputs configured for selectable output signals.

The 1901-1551 ULTRA has 1 external 10-bit, 0 to 10V DC analog input, with 1 programmable ±10V analog output, and it provides motor feedback using an incremental feedback encoder. The drive communicates using it base serial RS-232 communication port, with selectable baud rates between 1200 and 19,200, and with up to 32 addressing nodes. The drive has 2 LED light indicators, for showing the network and module’s statuses, and it can function without de-rating at a height of up to 1500m. The 1901-1551 ULTRA has a working temperature range of -5 to 55 °C (23 to 131 °F) at 5 to 90% non-condensing relative humidity range, and it can withstand a 2G operational vibration at 10 to 500Hz, with a maximum operational shock withstand of 15G. The 1901-1551 ULTRA has total shipping dimensions of 198.12mm x 72.6mm x 146.05 mm (7.8in x 2.86in x 5.75in), and it weighs approximately 1.7kg (3.7lbs).

Repair Services for 1901-1551

Type	Lead Time	Price	Action
Repair Service	2-4 weeks	Ask	Get Quote

Our highly skilled technicians can repair your 1901-1551. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Revisions for 1901-1551

Please refer to the manual for more information about the 1901-1551 such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.