IM 12A06S01-00EN-P
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2.2.2 Cable mounting
When there is less room to install the SA11 on top of the Yokogawa labelled sensor or
when the process conditions are higher than +100°C (for power 2.7 to +4.5VDC) or
+125ºC (for power 4.5 to +5.5VDC), an alternative mounting method is to install the
SA11 using the optional wall/pipe mounting hardware. The SA11 in this case is connected
to the sensor using the dedicated extension cable model WE10 with a fixed length of 2.95
meter. The ambient temperature limit of the device has to be within -30 to +55°C.
Figure 2.3: Example of cable mounting of SA11 to sensor
CAUTION
Place the Variopin connectors securely to guarantee IP67. When securing the Variopin
connectors, be sure no moisture is encaptulated to garantee isolation in between the
individual contacts. Variopin connector can be cleaned with iso-propanol. Be sure it is dry
before re-connecting.
Note:
Use the correct Variopin cable. For correct measurement without loss of specification
the SA11-P1 must be used with WE10-H-D-003-V1, all other types must be used
with WE10-H-D-003-V2.
2.3 Wiring to the HOST system
2.3.1 Wired connection
The Yokogawa HOST system is connected to the SA11 using the WU11 type S
interconnection cable with at one end wired terminals and on the other end a M9 connector.
This cable is specified for reliable transfer of digital signals, and especially designed to
be installed in a heavy industrial environment. The double shielded cable will protect the
connected devices for interference from high voltages and currents which are present
on other cables. The cable is specified to be used in IP67 applications, allowing it to be
submerged as a whole. The WU11 type S cable is available length up to a maximum of 100
meter.
2.3.2 Connection in daisy chain concept
The Yokogawa HOST system model FLXA402 can be connected to maximum five (5) SA11
devices. In case of more than two (2) SA11 devices connected, the BA11 Active Junction
Box must be used. Connection in between the FLXA402 and BA11 is done by using the
WU11 type S interconnection cable with at one end wired terminals and on the other end
a M9 connector. Connection in between the BA11 and the SA11 is done using the WU11
type S interconnection cable with at both ends a M9 connector. In both cases the maximum
length has to be within 100 meter.