Honeywell SYA14 Series Manual page 312

Connections and Setup
Internal Auxiliary Contacts (normally closed contact)
IMPROPER SYSTEM PERFORMANCE
• Comply with local safety requirements when designing machine control circuitry and all
control elements that affect safety.
• Install two independent relay contacts into machine control stop circuit controlled by FF-SM
Series safety mat.
• Use two independent stop circuit safety relays with mechanically linked contacts to reliably
detect a welded contact.
Failure to comply with these instructions could result in death or serious injury.
Always use two safety output contacts from the control unit for machine shutdown. The
normally closed contact A1/A2 is also a safety contact. This safety contact may be used to
relay the stopping information to the machine control circuitry, indicate the safety equipment
output status, or provide a redundant complement (secondary) to the main safety stop chain
system.
Figure 3-4 Internal Auxiliary Contact Connection
A1
FF-SM
control unit
Signalling
(relay status)
A2
(1) RC (220Ω + 0,22 µF) for AC interfaces or varistors for DC interfaces
Minimum of 10 mA through the internal auxiliary contact; additional resistor may be used with
programmable logic controller (PLC) to reach this minimum value.
38 Honeywell • PK 107007-01 EN FR26 GLO 0298 Printed in France
Phase
(DC+)
Fuse
(1)
K1
FSD
K1 K3
A4 A1 B1 C1
FF-SM
control unit
Signalling
(relay status)
internal
fuse
A5 A2 B2 C2
K3 K2
(1)
K2
FSD
Neutral
(DC-)
See page 42 for full size schematic.
FF-SM Series Installation Manual
(see figure 3-4)
NO P/B
K1
C4
K3
Optional test
input
K2
(or jumpered)
B3
(1)
K3
For application help: see Warranty Information
Dual channel
machine control circuit
(recommended circuit)
Phase
(DC+)
Fuse Fuse
K1 K1
K2 K2
K3 K3
Neutral
(DC-)
OR
Single channel
machine control circuit
Phase
(DC+)
Fuse
K1
K2
K3
Neutral
(DC-)