Description of the software
6.7 Functions
Modular Safety System 3RK3
176 System Manual, 10/2008, 926 2530-02 DS 02
Parameter name Description/parameter value
Type Use these parameters to determine the input type of the function:
• Two-channel (NONO)
IN1 and IN2 are monitored for "1", i.e. the function output Q is
deactivated when there is at least one "0" signal.
• Four-channel (NONONONO)
IN1/IN2 and IN3/IN4 are monitored for "1", i.e. the function
output Q is deactivated when there is at least one "0" signal.
• Four-channel (NONCNONC)
IN1/IN3 (NC) are monitored for "1" and IN2/IN4 (NO) are
monitored for "0" (antivalent), i.e. the function output Q is
deactivated when there is a signal change at IN1/IN2 or
IN3/IN4.
IN1 Select the input to be processed by the function.
IN2 IN2 is automatically assigned depending on the selected input IN1.
IN3 Only with parameter input > Four-channel type (NONONONO) or
four-channel type (NONCNONC):
Select the input to be processed by the function.
IN4 Only available with the parameter input > Four-channel type
(NONONONO) or four-channel type (NONCNONC):
IN4 is automatically assigned depending on the selected input IN3.
Cross-circuit detection When this parameter is activated, cross-circuits are detected with
the aid of test outputs at the inputs.
Parameter - Input
Input delay [ms] Select here when the functions further process the signals:
• Input delay = "0"
The input signals are further processed by the function without
time delay when there is a signal change.
• Input delay not "0"
This parameter can be used to suppress signal interference.
The signal state that was pending for most of the duration of
the input delay is further processed.
A two-hand control of type III C (Cat. 4) can only be implemented if
cross-circuit detection is activated.
Please note that the delay time specified by you is a multiple of the
program cycle time specified by you in the properties of the central
unit.
For additional information on the program cycle time, refer to the
Response times
chapter.
See also
Messages for two-hand operation (Page 266)