Banner ES-FA-6G Safety Module - Manual (Page 8)

One-Channel Monitoring
Configured for one-channel monitoring of multiple guards with sin-
gle switches at each guard (see Warning). Up to 10 Banner mag-
netic switches may be connected to each channel in this series/
parallel method.
WARNING:
Not a Safety Category 4 Appli-
cation.
When monitoring multiple guards
with a series connection of multi-
ple safety interlock switches, a
single failure may be masked or
not detected at all.
When such a configuration is
used, procedures must be per-
formed regularly to verify proper
operation of each switch. See
“Monitoring Series- Connected
Safety Switches” for more infor-
mation.
(If other than Banner magnetic switches are used, a total resist-
ance of 270 Ohms between S11/S13, S11/S12, S21/S22 and
S21/S23 must not be exceeded.)
Blue Gray Black Brown
Blue Gray Black Brown Blue Gray Black Brown Blue Gray Black Brown
Blue Gray Black Brown
Blue Gray Black Brown
S12 S13 S11
S23 S22 S21
SI-MAG..SM SI-MAG..SM SI-MAG..SM
Guard #1 Guard #2 Guard #n
SI-MAG..SM SI-MAG..SM SI-MAG..SM
Guard #3 Guard #4 Guard #n+1
NOTE: Switch/magnet pairs
shown in closed position.
Mechanical
stop
Mechanical
stop
SI-MAG..MM SI-MAG..MM SI-MAG..MM
SI-MAG..MM SI-MAG..MM SI-MAG..MM
Figure 5. Alternate wiring for one-channel monitoring of multi-
ple guards
Two-Channel Monitoring
Configured for two-channel monitoring of multiple guards with two
safety switches mounted individually on each guard (see Warning).
The number of mechanical switches is limited by the max. resist-
ance of 270 ohm between S11/S13, S11/S12, S21/S22 and S21/
S23. The total resistance is calculated by adding the resistance of
all guard switch contacts and the resistance of the cables that con-
nect the switches and the switches to the module.
Guard #1 Guard #2 Guard #3 Guard #n
NOTE: Guards shown in closed position.
S12 S13 S11
S23 S22 S21
Guard #4
Figure 6. Alternate wiring for two-channel monitoring of multi-
ple guards
WARNING:
Not a Safety Category 4 Application.
When monitoring multiple guards with a series connection of multiple safety interlock switches, a single
failure may be masked or not detected at all.
When such a configuration is used, procedures must be performed regularly to verify proper operation of
each switch. See “Monitoring Series- Connected Safety Switches” for more information.
GM-FA-10J Gate Monitoring Safety Module
8 www.bannerengineering.com - tel: 763-544-3164 P/N 060998 Rev. F