Cable Preparation; Model 700/800 Viewing Head Cable Connections - Honeywell 700 User Manual

HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD
700 LTA
T&B #5330
LIQUID
TIGHT
FITTING
FLEXIBLE LIQUID
TIGHT CONDUIT,
SUCH AS
ElectriFlex LT-516

Cable Preparation

NOTE: This section will typically be used for reference
only. The S70X/S80X connector parts are very
small and delicate and difficult to assemble. It is
advisable to purchase pre-made cables from
Honeywell.
Honeywell C330 cable is recommended for use with the
S70X/S80X viewing heads and signal processors. C330 cable
has a UL ITC rating and can be used in the US in hazardous
locations. Note the flame signal wire is shielded, and that the
shield must be terminated at both ends.
NOTES:
— The shield is used as the signal ground wire
which goes to terminal SIG GND on the signal
processor. The shield must be braided type for
this application in order to maintain an electrical
path. For this reason, a foil type shield should not
be used. The signal ground shield is also the self-
checking or shutter drive circuit return path. It is
recommended that the Honeywell C330 cable be
used for all S70X/S80X applications.
— Shield shrink tubing is required on the SIG GND
wire at both ends.
Connection of the Honeywell type C330 cable to the viewing
head plug is shown in Fig. 5. Cable preparation should be
done as follows:
• Remove the cable entry nut from the plug housing.
• Remove the retainer and rubber grommet.
• Unscrew the plug end from the connector body.
1. Strip 2 inches of the C330 cable outer cover from the
cable removing any cellophane wrap or filler material.
Strip the insulation from the shielded wire (if insulated
over shield) a full 2 inches to expose the shield.
66-2069—01
VH SC
5-16 (8)
MAX
Fig. 4. Model 700/800 Viewing Head Cable Connections.
VH SIG
GREEN
LED
VH +V
VH GND/SHIELD
METAL
CONNECTOR
RING
VIEWING HEAD
CONNECTOR
LOOKING AT PINS
C330 LIGHT BLUE CABLE
WITH SHIELDED WHITE CONDUCTOR
(RATED ITC BY UL & CIC BY CSA)
SHIELD
2. Slide the shield back until a bulge develops close to
where the wire exits the cable outer covering.
3. Carefully spread a few strands of the shield at the bulge
(making sure not to break any strands) to create an
opening and pull the wire out of shield through opening.
4. Carefully return shield to original shape and length by
pulling gently, then cover the shield with heat shrink
tubing to insulate it.
5. Slide the nut (with threads toward the cable end), the
retainer and the grommet onto the cable.
6. Slip the cable through the bottom opening of the
connector through the 90-degree bend and out the plug
end of the connector body.
7. Strip each wire 3/8" as shown in the assembly drawing.
8. Proceed to wire the connector as follows:
a. Connect the viewing head signal wire (the shielded
wire) WHT into the designated terminal by inserting
into opening and then tightening the retaining screw.
b. Connect the self-checking signal wire BLK to its
designated terminal.
c. Connect the signal ground shield from WHT wire
with shrink tubing to its designated terminal.
d. Connect the +24VDC power wire RED to its
designated terminal.
e. Connect the power ground wire GRN to the proper
terminal.
9. Carefully slide the wired plug end into the connector
body. Screw the plug onto the connector body until tight.
10. Reassemble the grommet, retainer and cable entry nut
and tighten to the connector body.
Cable at the signal processor end should be prepared in a
similar way to the plug end, particularly the shield from the
WHT wire. Follow the wiring connections as shown in Fig. 5,
making sure that the shield does not touch the other adjacent
terminals.
8
ORANGE
LED
VIEWING HEAD
CONNECTOR
LOOKING AT BACK
TERMINAL
WHITE
VH SIG
BLACK
VH SC
RED
VH +V
VH GND
GREEN
M34286