Sierra INNOVA 215 User Manual
Page 26
IM-215 Rev-A.1 Series Innova-Switch™ Page 26 of 42
following procedure can be used to verify preliminary operation.
1. Remove the instrument enclosure cover by turning counter clockwise to expose
the LS3200 Switch
electronics.
2. Turn on power at its source.
3. Observe that either the red or green LED comes on.
4. If neither lamp illuminates refer to the trouble shooting Section, 6.2.
5.2
L.E.D. and Relay Status Logic (Fail-Safe)
5.2.1
The L.E.D.s (Red and Green) are an indication of the sensors status (ie. dry or wet)
and are not affected by the position of the fail-safe jumper J-2. The fail-safe jumper J-
2 changes the relay activation status allowing the user to select the fail-safe power off
condition most appropriate to the application. Refer to the tables below that show the
logic conditions between the sensors, L.E.D. lights, relay coil and contacts for each
position of the fail-safe jumper J-2.
5.2.2
Normal Operation (as set at factory)
The switch comes configured from the factory with the following operation with the J-2
jumper in the B (2-3) position. (Refer to Figure 8.0.)
RELAY
RED GREEN
RELAY
CONTACT
SENSOR STATUS
LED
LED
COIL STATUS
STATUS
Dry, or Lower Thermal
o NC
Dispersion Fluid
ON
OFF
Activated
(ie. hydrocarbons)
o NO
Wet, or Higher Thermal
o NC
Dispersion Fluid
OFF
ON
Deactivated
(ie. water)
o NO
5.2.3
Alternate Operation (Field Selectable)
The relay logic may be reversed by moving the J-2 jumper to position A(1-2). (Refer
to Figure 8.0.)
RELAY
RED GREEN
RELAY
CONTACT
SENSOR STATUS
LED
LED
COIL STATUS
STATUS
o NC
Dry, or Lower Thermal
ON
OFF
Deactivated