Table of Contents
Advertisement
GD1 – Installation Guide
2.2.2 – STO CONNECTION
X2 N°
SIGNAL
7
IN7
6
IN6
16
0 V internal
20
0 V external
25
STO_OUT-
26
STO_OUT+
During the installation, take care to avoid proximity between any STO signal and high potential.
2.2.3 – TIMINGS
The STO function is based on forcibly guided relay technology. Its response time is given by the typical Operate
Time/Release Time of the relay: 12 ms / 20 ms.
Refer to the following chronogram for more detailed explanation:
STO1
t≤50ms
STO2
STO_OUT
Close
Open
Drive
state
Ready
The STO function has two feedbacks: the "STO_OUT" contact and detailed state available in object 0x3001. Only
the output "STO_OUT" is a safe output. An incoherent state detected between inputs STO1 and STO2 leads to a
fault state.
Used alone, the STO function corresponds to an uncontrolled stop in accordance with stop category 0 of the
EN60204-1 standard. So, this function is suitable for machines with low inertia or high resistive torque.
54
FUNCTION
STO1
STO2
GND internal
GND external
STO_OUT-
STO_OUT+
t≤50ms
20ms
12ms
Safe
DESCRIPTION
Channel 1 for the STO function inhibition
24 Vdc releases the enabling
Channel 2 for the STO function inhibition
24 Vdc releases the enabling
Voltage reference of the STO1 and 2 inputs.
0 V internal and 0 V external must be connected
together.
NC dry contact for the display of the STO1 input state.
24 Vdc – 2 A
t>50ms
Ready
Safe
Fault state
Part 3 - Appendix
Advertisement
Table of Contents
