300-R010-45G Datasheet, PDF (8/36 Pages) Magnetrol International, Inc. – Echotel® Model 300/301 Ultrasonic Non-Contact Transmitter For Level/Volume/Open Channel Flow

WIRING cont.
Shield
Active/Passive
mode switch
TRANSDUCER
WIRING
S
X1 X2
H
L
+–
(X1, X2 [GND], SHLD)
D
TEMPERATURE
SENSOR
WIRING
(+, –)
}⁽⁺⁾
(–) ^{4–20 mA terminals}
}^A
B RS-485 terminals
Not
used
Orange with white stripe
Shield
White with orange stripe
Transducer wiring (TB6)
+
–
X2
Shield
X1
Shield
White with blue stripe
Blue with white stripe
Figure 5
Front Panel Wiring
Figure 6
Optional Remote Transducer Housing Wiring
TRANSDUCER WIRING
The transducer wiring section describes the proper wiring
procedures for connecting a remote Model 301 transmitter
with a Model 384 transducer. If you have an integral Model
300 unit, please proceed to Control Relay Wiring.
NOTE: Remote mount Model 301 transducer cabling should
be routed through the 1" NPT conduit opening in the front of
the unit. No cables should be routed through the bottom
center entry in the base of remote-mounted Model 301 units.
The transducer cable consists of two twisted pairs of wire,
wrapped with a shield. Each wire is labeled for identification.
Refer to Figures 5 and 6.
After running the transducer wiring through the conduit,
from the transducer to the transmitter, separate the
wires into two groups;
Group 1 – Signal Wiring (transducer), orange wire pair.
Group 2 – Temperature Compensation Wiring (temper-
ature sensor), blue wire pair.
NOTE: It is imperative that Magnetrol cable, part number
037-3176 (Belden Type 8102 or Carol C0515/E111240), be
used. If connecting cable was not provided with unit, consult
the factory for specifications. Maximum total cable length is
500 feet (152 m). AVOID SPLICING CABLE.
To prevent electromagnetic noise from disrupting the normal
operation of the Model 301, each transducer cable must be
run in its own conduit, separated from power, relays, and
other transducer cables.
8