Honeywell SYA14 Series Manual page 657

MECHANICAL INSTALLATION
The FF-SRE3081 must be installed inside a NEMA 3 (IEC
IP54) rating enclosure or better. The module can be
clipped easily onto a 45mm width DIN rail (see figure
below for DIN rail installation and removal).
features of this product include removable block
terminals. This feature provides easy access to wiring
during installation and reduces machine downtime during
maintenance.
To remove a terminal block, loosen the two captive
screws (located off center and on the extreme sides of
block - see arrows for removal rotation), then slide the
terminal block out.
FIG 3. MOUNTING DIMENSIONS
(
for reference only)
a Width: 100 mm 3.94 in.
b Height: 74 mm 2.91 in.
c Depth: 121 mm 4.76 in.
a
Rail
FIG 4. INSTALLATION DIAGRAM
107014-10 EN FR26 GLO 0499 Printed in Germany
FIG 5. REMOVABLE TERMINAL BLOCKS
Specific
CONTROL RELIABILITY
"Control Reliability" means that "the device, system or
interface shall be designed, constructed and installed
such that a single component failure within the device,
interface or system shall not prevent normal stopping
action from taking place but shall prevent a successive
machine cycle." (ANSI B11.19-1990, 5.5)
OSHA 29 CFR 1910.217 states that "the control system
shall be constructed so that a failure within the system
does not prevent the normal stopping action from being
applied to the press when required, but does prevent
initiation of a successive stroke until the failure is
corrected. The failure shall be detectable by a simple test,
b
or indicated by the control system."
Honeywell has developed new patented self-checking
techniques which combine reliability with safety. The FF-SR
c
Series safety control modules function with dual channel
redundancy. A emergency stop module, a safety door
module, or any other safety device with external relay
monitoring capability will provide the necessary positive
self-check monitoring required for the FF-SRE3081. This
means that a faulty component in our system will make
the safety control modules fail in a safe mode.
This design meets the highest requirements (Category 4
as described in the EN 954 European norm). Category 4
safety control modules are designed and manufactured in
such a way that a single breakdown or an accumulation
of failures does not lead to the loss of the safety function
when a dangerous situation arises. The safety function
is maintained on a permanent basis.
Removable Terminal Block
3