Pilz PNOZ s30 24-240VACDC 2 n/o 2 n/c User Manual
Page 18
Function description
Operating Manual PNOZ s30
1001715-EN-13
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Start modes
You can choose between the following start modes:
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Automatic start
If an automatic start is configured, the output switches on automatically if the speed
does not reach the limit value, for example.
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Monitored start with rising edge
If a monitored start with rising edge is configured, the output switches on if the speed
does not reach the limit value and then a rising edge is detected at S34.
}
Monitored start with falling edge
If a monitored start with falling edge is configured, the output switches on if the speed
does not reach the limit value and then a falling edge is detected at S34.
Switch delay
A delay time can be set for each output (see technical details). The outputs will not switch
until the set time has elapsed. It is possible to configure whether the delay time is to be acti-
vated when switching on, switching off, or switching on and off.
WARNING!
Potential loss of safety function due to increased reaction time
The output switch-off delay (t
do
, Off) when overspeed is reached will in-
crease the speed monitor's reaction time by the stated value (see technical
details). This must not delay the arrival of a safe condition by more than the
permitted time. The configuration of the switch-off delay must be considered
in the risk assessment as regards hazards, reaction time and safety dis-
tance.
Feedback loops
Feedback loops are used to monitor external contactors or relays. The corresponding feed-
back loop must be closed before starting.
Start-up delay
A start-up delay time can be configured, which prevents the evaluation of the encoder sig-
nals for the configured time period after the supply voltage is switched on.
Switching direction on semiconductor outputs
The semiconductor outputs can be operated in normally de-energised or normally ener-
gised mode.
Units
The values to be configured can be entered in various units. Depending on the axis type
(linear or rotational axis), various units can be selected for speed and distance (see chapter
entitled "Menu overview").