Test Input - Honeywell SYA14 Series Manual

Connections and Setup

Test Input

The safety mat system is a fail safe device based on a permanent self-checking principle.
This means that the system's integrity does not rely on the test facility. The test input may be
used to check the correct operation of the Final Switching Devices K1 and K2 when the
protective equipment is interfaced to the machine control circuitry. This is especially important
if the protective equipment is not often triggered by frequent intrusion on the safety mat. See
figure 3-6 below.
PREMATURE INTERNAL RELAY CONTACT DAMAGE
The switching capacity of the normally open contacts is limited to the following values: Imax =
2A, Umax = 250 VAC, Pmax = 500 VA and Imin = 50mA. Do not exceed these value ranges.
Failure to comply with these instructions will result in product damage.
When the test contact (dry contact) is open, the control unit safety output contacts (normally
open contacts) are open (stopping the machine via K1 and K2). Also, the auxiliary safety
output contact of the control unit (normally closed contact) is closed and the normally closed
contacts of the external safety relays (K1 and K2) are closed. If this normally closed contact
test input is not used, leave the jumper installed between C4 and B3 located inside the control
unit.
A time of 140 milliseconds is required for the system to restart after the test contact is closed.
Figure 3-6 Test Input Wiring Diagram
FF-SM
C4
control unit
B3
T h e t e s t l o o p m u s t b e
opened for at least 100 ms.
Contact Status (safety mat in working condition, not activated)
Test
ON (C4-B3 closed)
OFF (C4-B3 open)
*Press the restart push button if necessary.
40 Honeywell • PK 107007-01 EN FR26 GLO 0298 Printed in France
Phase
(DC+)
Fuse
Optional test
input
(or jumpered)
FF-SM
control unit
Neutral
(DC-)
Safety outputs Auxiliary output
(NO contacts) (NC contacts)
ON* (closed) OFF* (opened)
OFF (opened) ON (closed)
FF-SM Series Installation Manual
(1)
K1
FSD
K1 K3
A4 A1 B1 C1
C4
Optional test
Signalling
input
(relay status)
(or jumpered)
internal B3
fuse
A5 A2 B2 C2
K3 K2
(1)
K2
K3
FSD
See page 42 for full size schematic.
K1, K2 (external relays)
ON* (energized/closed)
OFF (de-energized/opened)
For application help: see Warranty Information
Dual channel
machine control circuit
(recommended circuit)
Phase
NO P/B
(DC+)
Fuse Fuse
K1 K1
K2 K2
K3 K3
K1
K3
Neutral
(DC-)
OR
K2
Single channel
machine control circuit
Phase
(DC+)
Fuse
K1
K2
(1)
K3
Neutral
(DC-)