ABB NextMove ESB-2 motion controller

The official user manual for ABB NextMove ESB-2 multi axis motion controller is based on Mint programming language and supports up to 4-axis servo+4-axis stepper control. It comes standard with 2 channels of 12 bit differential analog input, 4 channels of 12 bit analog output, 20 channels of optically isolated digital input, 12 channels of digital output, 1 channel relay, 5 channels of differential encoder interface, USB/RS232/RS485/CAN communication, and achieves axis configuration, servo tuning, motion programming, and fault diagnosis through Mint WorkBench. It is suitable for industrial motion control scenarios such as high-precision point positioning, interpolation, electronic cam/gear, and flying shear, and meets CE, UL, and RoHS certifications.

Product positioning and core specifications

Basic Parameters

Parameter specifications

Control the number of axes: 4-axis servo+4-axis stepper

Power supply 24VDC ± 20%, maximum 2A/50W

Working temperature: 0~45 ℃

Size 245 × 140 × 45mm

Weight 700g

Certified CE, UL, RoHS, WEEE

Model differentiation (NSB202/203/204/205)

NSB202/204: Stepped output is differential RS422

NSB203/205: Stepped output with open collector electrode

Serial port version: RS232/RS485 optional

I/O interface resources

1. Analog I/O

Input: 2-channel differential, ± 10V, 12 bits, input impedance 120k Ω

Output: 4-channel bipolar, ± 10V, 12 bit, maximum 2.5mA/channel

2. Digital I/O

Input: 20 channels of optical isolation, 24VDC, can be set to level/edge trigger

DIN0~3: High speed interrupt input, response 1 μ s

DIN17~19: Can be used as an auxiliary encoder input

Output: 12 channels, total current * * ≤ 500mA * *, maximum 350mA per channel

relay: 1A@24VDC Fault safety normally closed output

3. Encoder and motion interface

Encoder: 5-way differential ENC0~4, supports A/B/Z, up to 2.5MHz

Step output: 4-axis, maximum 500kHz pulse frequency

4. Communication interface

USB 1.1: Programming and debugging, maximum 5m

RS232/RS485: baud rate 9600~115200bps

CAN: RJ45 interface, supports CANopen/Baldor CAN, baud rate 10k~1Mbps

Software and Programming

development environment

Mint WorkBench: Axis configuration, parameter tuning, programming debugging

Mint Machine Center (MMC): Network scanning, multi machine management

programming language

Mint: BASIC like structured motion language, supporting point positioning, interpolation, cam, and flying shear

Key functions

Electronic cam/gear, circular arc/spiral interpolation, multi axis synchronization, position comparison output

Axis configuration and servo tuning

1. Axis configuration process

Select axis type: servo/stepper/virtual

Set SCALEFACTOR: Pulse → User Unit (mm/°)

Configure driver enablement (IO/relay)

Save configuration to startup block

2. Servo loop gain (core)

KPROP: Proportional gain to improve response speed

KDERIV: Differential gain, vibration suppression

KINT: Integral gain, eliminating steady-state errors

KVELFF: Speed feedforward to reduce tracking error

3. Set goals

Critical damping: fast in place, no overshoot, no oscillation

Installation and wiring specifications

Installation: Vertical installation, leaving * * ≥ 20mm * * heat dissipation space around the perimeter

Grounding: single point grounding, shielded wire single end grounding

Encoder: twisted pair shielded wire, maximum length 30.5m

CAN bus: 120 Ω terminal resistors at both ends, consistent baud rate across the entire network

Fault diagnosis

Status display: 7-segment digital display shows node number/error code

Common Faults

Communication failure: Check USB/serial port driver, wiring, and address

Motor not turning: Confirm driver enable, wiring, and gain

Vibration/overshoot: reduce KPROP, increase KDERIV

Follow error: Increase KPROP/KVELFF, check encoder

Tools: SupportMe information collection, error logs, oscilloscope

Key issues

Question 1: How many servo and stepper axes does NextMove ESB-2 support? What are the core parameters of the interface between analog and encoder?

answer:

Motion axis: Supports up to 4-axis servo+4-axis stepper;

Analog quantity: 2-channel 12 bit differential input (± 10V), 4-channel 12 bit bipolar output (± 10V);

Encoder: 5-way differential RS422 interface, maximum input frequency of 2.5MHz, maximum wiring length of 30.5 meters.

Question 2: What are the functions of KPROP, KDERIV, KINT, and KVELFF in servo axis tuning? How to quickly obtain stable response?

answer:

KPROP: Improve response speed, excessive vibration;

KDERIV: Damping suppresses overshoot, and excessive response slows down;

KINT: Eliminate static errors, excessive oscillation will occur;

KVELFF: Speed feedforward to reduce tracking error in the uniform speed range.

Quick tuning: First adjust KDERIV anti vibration, then raise KPROP to just no vibration, add a small amount of KINT to eliminate the difference, and finally optimize KVELFF.

Question 3: What is the difference between DIN0~3 and regular digital input? What additional functions can DIN17-19 achieve?

answer:

DIN0~3 are high-speed hardware interrupt inputs, with a position latch response of 1 μ s, and cannot be directly connected to mechanical switches;

DIN17-19 can be configured as an auxiliary encoder input, supporting pulse+direction signals, up to 15kHz, for external spindle/spindle tracking.