Configuration

Limit switch operation

8.2.8 Limit switch operation

 

 

P217 ="0" Operating mode without end initiators

 

 

P217 ="1" Operating mode with two end initiators

 

 

2 initiators are required.

 

 

The displacement area is limited by the initiators attached at both ends of it. When

 

 

one of the end initiators is activated, an error message appears, the drive is

 

 

decelerated using P10; this does not apply to the "Find machine zero" function.

 

 

Subsequently, the limit switches can be deactivated with Hand+ or Hand-.

 

 

When P212 = 0 (or = "2"), the initiators are used as reversing initiators during "Find

 

 

machine zero".

 

 

In other machine zero modes, the initiators can be switched to end initiators by

 

 

P217 via bit 0="1".

 

 

 

 

 

Bit 114 (P217) = 0: limit switches are not monitored during reference travel.

Limit switch

 

monitoring

 

 

= 1: (P217= 3) limit switches are monitored during "Find machine

 

 

zero" (when P212<>0 and P212<>2).

during the

 

The operating mode bit 1 (P217)=1 assumes that 3 initiators are connected. Here it

reference travel

 

is not possible to use one of the two end initiators as a machine zero initiator.

Response when the

 

Regardless of the search direction P213, both limit switches are monitored.

When one of the two limit switches is reached, COMPAX responds with an

limit switch is

emergency stop.

reached:

Then the following applies: move out of the danger zone using Hand+/-, then

 

 

acknowledge.

 

 

In such cases, the "MZ approached" output is not set.

 

Bit 2 (P217) = 0: function corresponding to Bit 0 and Bit 1.

Limit switch

 

monitoring

 

 

= 1: (P217= 5) after activation of a limit switch, the drive is braked

 

 

with P10 (standard), however travel movements are still

without locking

 

 

 

 

possible afterwards using POSA and POSR.

the movement

 

The operating mode bit 1 (P217)=5 assumes that 3 initiators are connected. Here it

 

 

is not possible to use one of the two end initiators as a machine zero initiator.

 

 

 

 

 

 

 

P216:

 

Initiator I1 is assigned the direction of motor rotation using P216.

specifying the

 

 

P216: ="0": initiator I1 is approached with the clockwise rotating motor.

limit switch

 

 

P216: ="1": initiator I1 is approached with the anti-clockwise rotating motor.

position

 

 

Clockwise rotation defined when looking at the motor shaft.

Setting aid:

Move to a limit switch using Hand+ (when P215="0"); an error message appears in

 

 

the COMPAX display:

 

 

error 50: I1 has been activated; i.e. P216="0"

 

 

error 51: I2 has been activated; i.e. P216="1"

This allocation only applies if P215="0"; if P215="1" the allocation is reversed.

When operating with the reversing initiators, but no limit switches, an error message will not appear. You then have two options:

14Bit-counting begins with Bit 0.

89

Unit

hardware

 

 

Connector

assignment / cable

Technical data

 

 

 

Configuration

 

 

 

Positioning and

control functions

 

 

Optimization

functions

 

 

Interfaces

 

 

 

Accessories /

options

 

 

Status

 

 

 

Parameter

 

 

 

Error list

 

 

 

Page 89
Image 89
Parker  Products COMPAX-M /-S (L) manual Limit switch operation