300-R010-45G Datasheet, PDF (9/36 Pages) Magnetrol International, Inc. – Echotel® Model 300/301 Ultrasonic Non-Contact Transmitter For Level/Volume/Open Channel Flow

WIRING cont.
WITHOUT A TRANSDUCER HOUSING
Group 1
1. Connect the orange with white stripe wire to the termi-
nal marked X1 at TB6.
2. Connect the shield wire to the terminal marked GND
at TB6.
3. Connect the white with orange stripe wire to the termi-
nal marked X2 at TB6.
Group 2
1. Connect the white with blue stripe wire of the twisted
pair to terminal labeled positive (+) at TB6.
2. Connect the blue with white stripe wire of the twisted
pair to terminal labeled negative (-) at TB6.
3. Proceed to the appropriate section for wiring options.
NOTE: Both groups of wire must be connected.
WITH A TRANSDUCER HOUSING
If transducer housing is provided, use the connecting cable
ordered with the remote transducer housing. Connect the
transducer cable between the terminal block in the trans-
ducer housing to TB6 in the transmitter. Be sure to connect
wires to appropriate terminals. Refer to Figures 5 and 6 on
page 8.
Group 1
1. Connect the orange with white stripe wire from the
transducer housing terminal marked X1 to the terminal
marked X1 at TB6 in the transmitter.
2. Connect the shield from the transducer housing termi-
nal marked SHLD to the terminal at TB6 in the trans-
mitter.
3. Connect the white with orange stripe wire from the
transducer housing terminal marked X2 to the terminal
marked X2 at TB6 in the transmitter.
Group 2
1. Connect the white with blue stripe wire of the twisted
pair from the transducer housing terminal marked posi-
tive (+) to the terminal labeled positive (+) at TB6.
2. Connect the blue with white stripe wire of the twisted
pair from the transducer housing terminal marked neg-
ative (-) to the terminal labeled negative (-) at TB6.
3. Proceed to the appropriate section for wiring options.
NOTE: In high humidity applications, it is recommended that
the wiring within the remote transducer housing be com-
pletely immersed in an insulating compound (3M #4441 Gella
Re-enterable Encapsulating Compound or equivalent).
CONTROL RELAY WIRING
The Model 300/301 unit is supplied with four relays that can
operate as normal, independent contact closures or be used
as dedicated relays as follows:
Relay 1 Normal/Fault/Lead-Lag
Relay 2 Normal/Lead-Lag
Relay 3 Normal/Lead-Lag
Relay 4 Normal/Lead-Lag
Relay connections are supplied on the main terminal board.
Refer to Figure 4 on page 7.
1. Connect two-wire leads to the desired relay connection
for relays 1– 4. Connect one wire to the terminal labeled
COM and the other to the terminal for the desired con-
tact function, NC for normally closed or NO for normal-
ly open. Repeat this step for each relay.
2. Refer to Relay Settings in the I/O Configuration section
on page 22 for information on configuring the relays.
3. Proceed to wire any remaining options the unit may
have.
NOTE: If the device to be operated by the relay has an
inductive load, a separate power supply should be used for
the Model 300/301 transmitter.
OUTPUT SIGNAL WIRING
4–20 mA DC Output
A shielded twisted pair should be used for the 4-20 mA out-
put. The + and – connections are made at the terminal block
to the right of the 16-button keypad as shown in Figure 5 on
page 8. The shield is connected with a female disconnect to
a connector located in the housing base, just below the sen-
sor connections. The loop is optically isolated, has non-
grounded outputs, and can drive a 1000 Ω load.
NOTE: The output may be either an active or passive 4–20
mA. If passive mode, customer must provide loop power.
Figure 5 on page 8 shows the Active/Passive mode switch.
1. Cut approximately 8" of insulation off the twisted shield-
ed cable.
2. Cut the shield wire down just short enough to crimp a
female disconnect (Sta-Kon^®) connector. Crimp the con-
nector on and push this over the male connector locat-
ed at the base of the housing as shown in Figure 7.
3. The + and – wires should then be twisted together and
run up to the 4-20 mA terminal block located to the right
of the 16-button keypad as shown in Figure 7.
4. Connect the positive (+) shielded twisted pair wire to the
+ location on the terminal block.
5. Connect the negative (–) shielded twisted pair wire to
the – location on the terminal block.
NOTE: The shield should be connected to an earth ground
at only one location.
4 56
1 23
+
–
A
.
0 DEL ^ENT
B
Shield connection
(Cut to shortest
possible length.)
Figure 7
4-20 mA Wiring
9