KL2541 - Connection

WARNING
Risk of injury through electric shock and damage to the device!

Bring the Bus Terminals system into a safe, de-energized state before starting mounting, disassembly or wiring of the Bus Terminals.

KL2541 - Connection 1:
KL2541-0000 - Connection

Terminal points - left part of the housing

Terminal point

No.

Connection

A

1

Encoder input A

C

2

Encoder input C (zero input). If bit CW.0 is set in the control word and a rising edge occurs at encoder input C, the current counter value is stored as a reference mark in the latch register.

Encoder supply +

3

KL2541-0000: 24 V Encoder supply (from positive power contact)
KL2541-0006: 5 V Encoder supply (generated from positive power contact)

Input 1

4

Digital input 1 (24 VDC). The current counter value is saved as a reference mark in the latch register if bit CW.1 is set in the control word and a rising edge occurs at digital input 1.

B

5

Encoder input B

Latch/Gate

6

Latch input. The current counter value is stored as a reference mark in the latch register, if in the control word

  • bit CW.3 is set and a rising edge occurs at the latch input; or
  • bit CW.4 is set and a falling edge occurs at the latch input.

The counter can be disabled via this input if

  • the feature bit RP0.R32.12 is set and the latch/gate input is on low potential; or
  • the feature bit RP0.R32.13 is set and the latch/gate input is on high potential

If the counter is disabled, this is reported from the terminal to the controller via status bit SW.7.

Encoder supply 0 V

7

Encoder supply (from negative power contact)

Input 2

8

Digital input 2 (24 VDC). The current counter value is saved as a reference mark in the latch register if bit CW.2 is set in the control word and a rising edge occurs at digital input 2.

Terminal points - right part of the housing

Terminal point

No.

Connection for

A1

1'

Motor winding A

B1

2'

Motor winding B

Sense A

3'

Motor winding A

Motor supply

4'

Supply for output stages (maximum +50 VDC)

A2

5'

Motor winding A

B2

6'

Motor winding B

Sense B

7'

Motor winding B

Motor supply

8'

Supply for output stages (0 VDC)

Connection examples

Note the connection examples for the KL2541.

Power contacts

The power contacts (+24 VDC) supply the following consumers:

  • Incremental encoder (terminal points 3 and 7)
  • Digital inputs (terminal points 4 and 8)
  • Output driver of the stepper motor terminal

Order of switch-on of the supply voltages

When the K-bus voltage is switched on, the power contacts must already be energized, so that internal circuits (output drivers) can be initialized. If this is not possible (e.g. because the supply is activated via the emergency off circuit), a software reset is required for the terminal, once the system has started up (see command 0x8000).
From firmware version 2D, any outage of the control voltage (24 V, from the power contacts) is detected and indicated by bit SW.14. Restoration of the control voltage is detected automatically, and an initialization takes place.

WARNING
The motor does not stop if the K-bus voltage fails!

If the K-bus voltage (5 V) fails, the motor controller is not reset! In other words, if the motor is in motion, it is not stopped!