Xenus Plus Compact STO Manual
16-01553 Rev 00
Copley Controls
Page 14 of 31
6.2
STO Function Specifications
Specification
Requirement
Operation
When STO is active, motor current that can cause rotation (or motion in the
case of a linear motor) is not applied. The PWM outputs are disabled and
cannot source or sink current. This STO function is defined in IEC-61800-5-
2, clause 4.2.2.2
Standards Conformance
IEC-61508-1, IEC-61508-2, IEC-61800-5-2, ISO 13489-1
Safety Integrity Level
SIL 3
Category & Performance Level
Category 3, Performance Level PL d
Implementation
Hardware only
– Type A components
Systematic Capability
SC 3
Certifications
UL Functional Safety Mark (Pending)
Signals (Functional Safety
Related)
STO-IN1(+), STO-IN1(-), STO-IN2(+), STO-IN2(-), Frame ground (shield)
Signals (for muting)
STO-Bypass, STO-Gnd
STO Input Energize
Voltage Level
Vin-HI
≥ +15.0 Vdc between STO-IN(+) and STO-IN(-)
STO Input De-energize
Voltage Level
Vin-LO
≤ +6.0 Vdc or open between STO-IN(+) and STO-IN(-)
Input current (typical)
STO-IN1: 11.2 mA, STO-IN2: 11.2 mA
Current flow is into STO-IN1(+) and STO-IN2(+) and out of STO-IN1(-) and
STO-IN2(-). STO inputs must not be connected in series.
Response Time
From Vin ≤ 6.0 Vdc or open to STO Activated : 2 ms
Type
Opto-isolators, 24V compatible
Maximum cable length
30 m (98.4 ft)
6.3
Environmental Specifications
Specification
Requirement
Operating Temperature
0 °C to 45 °C per IEC 60068-2-1:2007 and IEC 60068-2:2007
Operating Humidity
0 to 95 %RH, non-condensing per IEC 60068-2-78:2001
Storage Temperature
-40 °C to 85 °C per IEC 60068-2-1:2007 and IEC 60068-2-2:2007
Altitude
≤ 2000 m per IEC 60068-2-13:1983 or ≤ 4000 m if an isolation transformer
is used to establish an OVC II environment.
Contaminants
Pollution Degree 2 per IEC 60664-1:2007
Mechanical Shock
10
g
, 10 ms, 1/2 Sine Pulse per IEC 60068-2-27:2008
Vibration
2g, peak, 10~500 Hz (Sine) per IEC 60068-2-6:2007
Table 6
Table 7
