Honeywell SYA14 Series Manual page 649

FF-SRD5985 Series
FIG 3. CURRENT VS. TEMPERATURE LIMIT
-22 32 50
Ambient Temperature
Figure 3. displays the maximal recommended external
temperature versus the total load of all the safety module
contacts. To use this curve, do the following:
(1)
Follow the horizontal line from the value (vertical axis)
equal to the current inside the safety module contacts
and note intersection of the appropriate curve.
(2)
Follow the intersection point down to determine the
maximal recommended ambient temperature. (Ex: 4 A
current inside each two safety contacts, then T = 43
°
(109 F).
If the module is located in a higher temperature
environment, the lifetime of the electronic components may
be reduced. Ventilation of the cabinet may be required.
MECHANICAL INSTALLATION
The FF-SRD5985 must be installed inside a NEMA 3 (IEC
IP54) rating enclosure or better. The module can be
mounted easily onto a 45mm width DIN rail (see figures 4
and 5 below for installation and mounting).
FIG 4. MOUNTING DIMENSIONS
a Width: 45 mm 1.77 in.
b Height: 74 mm 2.91 in.
c Depth: 121 mm 4.76 in.
PK 107013-01-EN FR26 GLO 398 Printed in Germany
°
68 86 104 122 140 T( F)
(
for reference only)
ISSUE 1
FIG 5. INSTALLATION DIAGRAM
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, or indicated by the
control system."
Honeywell uses self-checking techniques that combine
reliability with safety. This means that a faulty component in
our system will make the safety control modules fail in a
safe mode.
The FF-SRD5985 safety control module functions with dual
internal channel redundancy and positive self-check
°
monitoring.
C
The design of this device 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 internal failures does not lead to the loss of
the safety function when a dangerous situation arises.
safety function is maintained on a permanent basis.
PK107013-01
The
3