Banner SC22-3E Safety Controller with Ethernet - Manual (Page 91)

The following sections deal only with Category 2, Category 3, and Category 4 applications, as described by ISO 13849-1 (1999). The
following figure provides a snapshot of the possible safety categories that can be achieved for each device type, depending on the selec-
ted circuit option. Refer to the text sections following, as well as the appropriate standards, for further information.
Circuit Symbol
E-Stop Safety
Gate
Optical
Sensor Two-Hand
Control
Rope
Pull
Protect.
Stop
Safety
Mat
Enabling
Device
Cat. 2 Cat. 2 Cat. 2 — Cat. 2 Cat. 2 — —
Cat. 3
Cat. 2
Cat. 3 Cat. 2
Cat. 3 Type IIIa Cat. 1
Type IIIb Cat. 3
Cat. 3
Cat. 2
Cat. 3
—
Cat. 2
Cat. 3
Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4
Type IIIa Cat. 1
Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4
Cat. 4
Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4
Type IIIa Cat. 1
Type IIIb Cat. 3
Cat. 4
Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4 Cat. 2
Cat. 3
Cat. 4
—
Cat. 2
Cat. 3
Cat. 4
—
Cat. 3
Cat. 4
— Type IIIc Cat. 4 — — —
Cat. 3
Cat. 4
—
Cat. 3
Cat. 4
— Type IIIc Cat. 4 — — —
Cat. 3
Cat. 4
— — — — — —
Cat. 2
Cat. 3
—
NOTES
• Cat. B or 1 is assumed when not using safety-rated devices.
• All safety input device contacts are shown in the ON/active state (e.g., E-stop in the armed state, safety gate in the
closed state, light screen in the clear state, etc.)
• Cat. B/1, 2, 3 and 4 are per ISO 13849-1 (EN 954-1), except for two-hand control.
• Two-hand categories are per ISO 13851.
24V
24V
ON ON
24V
OFF ON
24V
OFF ON OFF ON
Figure 59. Input devices, circuit options, and their potential safety categories
WARNING: . . . Safety Categories
The level of safety circuit integrity can be greatly impacted by the design and installation of the safety devices and the means
of interfacing of those devices. A risk assessment must be performed to determine the appropriate safety circuit integ-
rity level or safety category as described by ISO 13849-1 (EN 954-1) to ensure that the expected risk reduction is
achieved and that all relevant regulations and standards are complied with.
SC22-3/-3E Safety Controller Instruction Manual
P/N 133487 rev. C www.bannerengineering.com - tel: 763-544-3164 91