Operating Instructions Raman Rxn2
30 Endress+Hauser
7.2.3 Hazardous area installation drawing
Figure 22. Hazardous area installation drawing (4002396 X6)
7.2.4 Remote laser interlock connectors
Adjacent to each instrument probe connector resides a remote interlock connector. This connector allows integrators
to access the analyzer’s individual channel interlock circuit, and connect external switching devices, such as the
emergency stop button and door switch, as additional means to stop laser radiation for each channel. This connector
is in series with the associated channel’s probe connector interlock loop. The output of this connector is intrinsically
safe. Connection of external devices, including cabling, to this connector are governed by drawing 4002396.
The instrument ships with shorting plugs installed in each channel’s remote interlock connector. Should field wiring
be required for an external switch, a remote interlock pigtail may be purchased to facilitate connection to field wiring
using p/n 70189075 (single pigtail) or p/n 70189076 (four pigtails). Replacement shorting plugs may be purchased
using p/n 70193450.
If one emergency switch is required to interrupt all four channels of a four-channel instrument simultaneously, a
4-pole switch shall be used. The four separate interlock loops are electrically isolated and may NOT be tied together
electrically. Endress+Hauser recommends IDEC XN1E-BV404MR for a 4PST-NC emergency stop button switch.
Refer to drawing 3000095 for remote interlock connection details.
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