Allen Bradley 1326AB high-performance AC servo motor

Torque (T pa=peak acceleration torque, T ss=steady-state torque, T pd=peak deceleration torque, T r=static torque)

Intermittent operation zone: suitable for acceleration and deceleration scenarios, with a duty cycle RMS torque ≤ rated torque to avoid overheating.

Installation and Dimensional Specifications

1. Mechanical installation requirements

Rail adaptation: The A/B/C series both support 35 × 7.5mm DIN rails (models 199-DR1, etc.). The top hook of the module is locked by rotation after being hooked in, and the grounding resistance should be ≤ 2 Ω (detected through the metal shell of the RS-232 port).

Axial load limit: Radial and axial loads must meet the bearing life requirements (B10 life of 15000 hours). Taking the C series as an example, the maximum radial load at 500rpm is 900lbs, and the axial load is 600lbs (refer to the load curve in Figure 8 for details).

2. Key dimensions (taking imperial flanges as an example)

Series length AD (inches) flange diameter O (inches) shaft diameter U (inches) keyway size (inches) with brake length increase (inches)

A1x-11 8.69 4.38 0.625 0.19×0.19×1.38 2.25

B2x-11 13.16 5.88 1.125 0.25×0.25×1.50 2.25

C3x-11 17.38 7.63 1.375 0.31×0.31×2.00 2.5

3. Cable installation

Wiring specifications: Power cables (1326-CPABxx) are wired by color (red=PWR, white=CAN_S, blue=CAN_L, black=COM, bare wire=shielded); The feedback cable (1326 CFUxx) needs to distinguish between the switching signal and the encoder signal, and the shielding layer should be grounded separately.

Bending radius: The standard cable has a single bending radius of ≥ 2 inches (50.8mm), and the high flexibility drag chain cable has a bending radius of ≥ 6.8 inches (172.7mm). Before installation, it needs to be laid flat for 24 hours to release internal stress.

Application Selection and Calculation Guide

1. Selection steps

Determine the speed requirement: Calculate the peak speed of the motor based on the mechanical transmission ratio (for example, if the lead screw is 2 inches and the slide table speed is 400ipm, then the motor speed=400/2=200rpm, with a 20% margin to be reserved).

Calculate continuous torque: Taking screw drive as an example based on load type (friction, cutting force, etc.):

T m=6.28 × e 1 × e 2 × G.R. (W 1 × u+Trust) × Lead × 1.1 (W 1=slide weight, u=friction coefficient, Lead=lead screw, e 1/e 2=lead screw/gearbox efficiency, G.R.=transmission ratio, 1.1 is safety factor)

Verify peak torque: Considering acceleration and deceleration requirements, the calculation formula is:

Peak torque (J total=total moment of inertia, Δ rpm=speed change, t accel=acceleration time, T l=load torque)

Match motor parameters: Ensure that the peak speed of the motor is ≥ the calculated value, the continuous torque is ≥ the required value, and the total inertia is ≤ 5 times the motor inertia (to avoid response lag).

2. Typical application calculation example (screw drive)

Known conditions: slide weight of 500lbs, friction coefficient of 0.05, lead screw of 1 inch, transmission ratio of 1:1, efficiency of 0.9, acceleration time of 0.5 seconds, and speed from 0 to 1000rpm.

Continuous torque calculation: T m=6.28 × 0.9 × 1 (500 × 0.05) × 1 × 1.1 ≈ 5.0 lb in, select A1G (16 lb in) to meet the demand.

Peak torque calculation: Total inertia=sliding table inertia (386500 × (6.281) 2 ≈ 0.0033 lb in ²)+motor inertia (0.004)=0.0073, peak torque=9.6 × 0.5 0.0073 × 1000+0 ≈ 1.52 lb in, which is less than the A1G peak value of 48 lb in and meets the requirements.

Maintenance and safety precautions

Thermal protection: The maximum temperature of the motor winding is 150 ° C (H-class insulation). When the ambient temperature exceeds 40 ° C, it needs to be de rated for use (for every 10 ° C increase, the torque is de rated by 10%).

Brake usage: The brake is only used for static load holding (switching ≤ 90 times per hour) and cannot be used for positioning or frequent braking. The 24V DC brake requires the user to provide their own power supply (0.88-1.2A).

Protection level: IP65 is only applicable to situations with shaft seals and no external feedback/fan. Additional protection is required in humid or corrosive environments.

Troubleshooting: When triggering the thermal switch, it is necessary to first investigate issues such as excessive load and poor heat dissipation. Resetting requires waiting for the winding temperature to drop to 90-100 ° C.