Use As Directed; Prohibited Use Sto; Enclosure; Wiring - Kollmorgen S700 Series Instruction Manual

7.9.3 Use as directed

The STO function is exclusively intended to provide functional safety, by preventing the
restart of a system.
To achieve this functional safety, the wiring of the safety circuits must meet the safety
requirements of IEC60204, ISO12100, IEC62061 respectively ISO13849-1.
In case of single channel control: if STO is automatically activated by a control system,
then make sure that the output of the control is monitored for possible malfunction.
To achieve PL e or SIL CL3, the safe switching of the pulse inhibitor must be tested peri-
odically by analyzing the feedback signal from the safety control (➜ # 51).

7.9.4 Prohibited Use STO

The STO function must not be used if the drive is to be made inactive for the following reas-
ons :
Cleaning, maintenance and repair operations, long inoperative periods:
In such cases, the entire system should be disconnected from the supply by the per-
sonnel, and secured (main switch).
Emergency-Off situations: the mains contactor must be switched off (by the emergency-
Off button).

7.9.5 Enclosure

Since the servo amplifier meets enclosure IP20, you must select the enclosure ensuring a
safe operation of the servo amplifier referring to the enclosure. The enclosure must meet
IP54 at least.

7.9.6 Wiring

When using STO wiring leads outside the control cabinet, the cables must be laid durably
(firmly), protected from outside damage (e.g. laying in a cable duct), in different sheathed
cables or protected individually by grounding connection.
Wiring remaining within the demanded enclosure must meet the requirements of the standard
IEC 60204-1.

7.9.7 Technical data

STO1-Enable and STO2-Enable
Input voltage
Input current
Peak current
Response time
(falling edge at STO input until energy supply
to motor is interrupted)
S748-772 Instructions Manual | 7 Technical description
Data
20 V..30 V
33 mA – 40 mA (Ieff)
100 mA (Is)
STO1: 1 ms
STO2: 2 ms
Kollmorgen | kdn.kollmorgen.com | July 2019 43