USER MANUAL
Document reference MAODS301/E
SpeedSys300 ODS301 overspeed detection system
Edition 4 - May 2022
3 - 20
Installation considerations
INSTALLATION OF A SPEEDSYS300 ODS301
For ordinary applications (non-explosive atmospheres), the installation is typically in an
EMC/ESD uncontrolled area, which means that the cable shielding must be double-end
connected (that is, cable shields must be connected to ground at both ends of the cable). This
is shown in
For applications in potentially explosive atmospheres (Ex Zones), it is important to note that
the Ex Zone can be regarded as an EMC/ESD controlled area, which means that the cable
shielding can be single-end connected (that is, cable shields can be connected to ground at
one end of the cable only). This is shown in
.
See also
.
3.2.11 Safety instructions – safety-related applications
For use in safety-related applications (functional-safety contexts), the SpeedSys300 ODS301
module is equipped with two processors (microcontrollers) that mutually monitor each other
(the “Duotec” system).
For all information and installation instructions concerning applications (functional-safety
contexts), refer to the
SpeedSys300 ODS301 overspeed detection system safety manual
.
3.2.12 Safety instructions – potentially explosive atmospheres
For use in applications where a SpeedSys300 ODS301 module is connected to circuitry
(sensor / measurement chain) installed in a potentially explosive atmosphere (hazardous
area), the SpeedSys300 ODS301 module has the following explosion protection marking:
•
II (1) G [Ex ia Ga] IIC (outside Ex Zone)
•
II (1) D [Ex ia Da] III
3.2.12.1
Category (1) G equipment
As a certified category (1) G equipment, the device may only be mounted in the ex-safe
(non-hazardous) area. The protected sensor circuits (B01-B02, B05-B06-B07 or B09-B10)
may reach into areas, requiring 1G, 2G or 3G equipment.
3.2.12.2
Category (1) D equipment
As a certified category (1) D equipment, the device may only be mounted in the ex-safe
(non-hazardous) area. The protected sensor circuits (B01-B02, B05-B06-B07 or B09-B10)
may reach into areas, requiring 1D, 2D or 3D equipment.
A
S
AN
ASSOCIATED
APPARATUS
,
THE
S
PEED
S
YS
300 ODS301
MODULE
MUST
BE
INSTALLED
OUTSIDE
OF
THE
POTENTIALLY
EXPLOSIVE
AREA
.
Содержание vibro-meter SpeedSys300 ODS301
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