Footswitch (Safety Pedal) - Reer MZERO Installation, Use And Maintenance Manual

➔
If the Manual Reset is active, a consecutive Input have to be used. Example: Input 1 and Input
2 are used for the functional block, then Input 3 have to be used for the Reset Input.
OUT TEST signals cannot be used in case of safety static output ESPE because the control is carried
out from the ESPE.
Test at start-up: If selected this enables the test at start-up of the safety light curtain. This test is
performed by occupying and clearing the area protected by the safety light curtain to run a
complete function test and enable the output. This test is only requested at machine start-up
(when the unit is switched on).
Filter (ms): This is used to filter the signals coming from the safety light curtain. The filter can be
configured to between 3 and 250 ms and eliminates any bouncing on the contacts. The length of
the filter affects the calculation of the unit's total response time.
Simultaneity (ms): always active. Determines the maximum permissible time (ms) between
switching of the various signals from the external contacts of the device.
Enable Error Out: If selected reports a fault detected by the function block.
Item description: This allows a description of the component's function to be entered. The text is
displayed in the top part of the symbol.

FOOTSWITCH (safety pedal)

The FOOTSWITCH function block verifies the status of
the inputs of a safety pedal device. If the pedal is not
pressed the output is 0 (FALSE). Otherwise the output
is 1 (TRUE).
Parameters
Input type:
- Single NC – Allows connection of pedals with one
NC contact
- Single NO – Allows connection of pedals with one
NO contact.
- Double NC – Allows connection of pedals with two
NC contacts
- Double NC/NO – Allows connection of pedals with
one NO contact and one NC.
Double NC/NO correct connection
Contact NC to terminal corresponding to IN1
▪
Contact NO to terminal corresponding to IN2
▪
Manual reset: If selected this enables the request to reset each time the safety pedal is activated.
Otherwise, enabling of the output directly follows the input conditions.
There are two types of reset: Manual and Monitored. When Manual is selected the system only
verifies the signal's transition from 0 to 1. If Monitored is selected the double transition from 0 to
1 and then back to 0 is verified.
8541403 • 19/07/2021 • Rev.1
STAND ALONE PROGRAMMABLE SAFETY CONTROLLER
49