Weld Control Unit

Rotwel-Max1

Rotwel-Max1 is a modular configurable serially communicating weld control unit.

Specification

• Dimensions: 194w x 130d x 178h mm (7.625"x5.125"x72)

• Weight: 6,3 kg (14 lbs)

• Thyristor water requirements: 5l/min, 40°C (1.3GMP @ Max 104°F)

• Internal thyristor thermal protection

• Independent control voltage: 80-140 VAC 150 Ma

• Voltage range for welding: 156-600 VAC

• Operating frequency: 50 or 60 Hz (auto-adjust)

• Welding thyristor: 430 A cont., 7000 A inst., 860 A @ 30 cycles @ 8% duty cycle

• Input: Emergency stop, thyristor over-temp, transformer over-temp

• Output: Shunt-trip (always active)

• Communication: RS 485 multidrop, 9.6 kb or 19.2 kb

• Control features such as:

  • wait (cycles)

  • heat (% or IRMS, cycles)

  • pulsation (0-99 heat/cool impulses)

  • up/down slope (linear)

  • touch down initiation (minimizes squeeze time)

  • wait for voltage (0-99 cycles)

  • reweld on low current

  • 16 assignable steppers (counts to 100,000)

  • Constant current or voltage, user-selectable

  • Expulsion limiter in constant current mode

  • SPC through "last weld" data acquisition

  • 32 user-enabled fault diagnostics

  • Programmable "watch-dog timer"

Serial communication protocol

Rotcom

The Rotcom software is a ready-to-use communication software which enables programming of the weld control unit Rotwel-Max1 from a PC.

RT-I/O-99

RT-I/O-99 is a compact I/O-board which facilitates communication with the weld control unit Rotwel-Max1 when welding manually or when using ABB´s RAPID software module SpotWare.

Specification

• Supply voltage, 24V DC

• Communication, RS 232

• Display

  • Number display, showing fault codes

  • 10 LEDs

• IN-signals, 8

  • Reset weld-timer

  • Start weld

  • Reset stepper

  • Sequence selection

    • bit 0

    • bit 1

    • bit 2

    • bit 3

• OUT-signals, 10

  • Valve (750 mA)

  • Error - command ready with FAULT (500mA)

  • MC - weld ready (500 mA)

Rotweld

Rotweld is a RAPID software module especially designed for the ABB S4 and ABB S4C robot controllers which enables communication with the weld control unit Rotwel-Max1. 

LWI card

The Local Weld control Interface card, LWI, is designed for networking of the weld control units. One LWI card is capable to hold up to 16 weld control units, Rotwel-Max1.