Accelnet & Stepnet Plus Panels STO Manual
16-01338 Rev 00
Page 16 of 34
Copley Controls
7.2 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 by either Axis A or Axis B. The
PWM outputs of both axes 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
TÜV SÜD 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 DC Power
+24 Vdc, typical, maximum withstand v60 Vdc
STO DC Power Source
SELV power supply required
STO Input Energize Voltage
Vin-HI
≥ +15.0 Vdc between STO-IN(+) and STO-IN(-)
STO Input De-energize Voltage
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 be connected in parallel.
Response Time
From Vin ≤ 6.0 Vdc or open to PWM outputs disabled (off): 2 ms
Type
Opto-isolators, +24 VDC compatible
Maximum cable length
30 m (98.4 ft)
7.3 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
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
2
g
, peak, 10~500 Hz (Sine) per IEC 60068-2-6:2007
Table 8
Table 9
