Delta Tau GEO BRICK LV Manuel D’Utilisation
Geo Brick LV User Manual
PinOuts and Software Setup
25
Disabling the STO
Disabling the STO maintains full backward compatibility with existing systems,
pre-STO installations. This can be simply done by tying STO disable (pin #4) to
STO Disable RTN (pin #5).
Pins 1, 2 and 3 have no practical use in this mode, and should be left floating.
pre-STO installations. This can be simply done by tying STO disable (pin #4) to
STO Disable RTN (pin #5).
Pins 1, 2 and 3 have no practical use in this mode, and should be left floating.
STO Out
TB3
STO IN 1
STO IN 2
STO DISABLE
STO DISABLE RTN
5
4
3
2
1
Wiring and Using the STO
Single STO Trigger
Dual STO Trigger(s)
STO Out
TB3
STO IN 1
STO IN 2
STO DISABLE
STO DISABLE RTN
5
4
3
2
1
24 VDC
Power Supply
COM
+24 VDC
N.C
Input to Brick/Logic
2
3
1
+ 24VDC
CHGND
+24VRET
TB1
STO Out
TB3
STO IN 1
STO IN 2
STO DISABLE
STO DISABLE RTN
5
4
3
2
1
24 VDC
Power Supply
COM
+24 VDC
N.C
Input to Brick/Logic
2
3
1
+ 24VDC
CHGND
+24VRET
TB1
In normal mode operation, the STO relay(s) must be normally closed. +24VDC must be applied to
both STO inputs (pins #2, #3) to allow power to the motors.
both STO inputs (pins #2, #3) to allow power to the motors.
The STO is triggered, and power is disconnected from the motors, if the +24V is disconnected from
either STO inputs (pins #2, #3).
either STO inputs (pins #2, #3).
The STO Out (pin #1) is a voltage status output rated to 24 VDC
±10% at a max of 125mA
. It
reflects the status of the STO function:
(24 V) in normal mode operation (+24VDC connected to both STO inputs)
( 0 V) in triggered mode (+24VDC disconnected from either STO inputs)
( 0 V) in triggered mode (+24VDC disconnected from either STO inputs)
Certain safety standards require dual protection, thus mandating the use of two STO input triggers.
The STO relay(s) can be wired in series with the E-Stop circuitry which typically disconnects the
main bus power from the system.
main bus power from the system.
Summary of operation and status:
+24 VDC
STO State
STO Out
Applied to both STO Inputs
Not Triggered (normal mode operation)
24V
Disconnected from either STO inputs
Triggered
0V