Dwyer UTS - Manual (Page 7)

Wiring the Sensor Cable
Sensor cable specifications: 5 wires, 0.75 mm
2 overall shielded.
After the sensor is installed on the tank, the free end of the sensor cable is
connected to the electrical unit using terminal JP5.
To Wire the Sensor Cable to JP5:
7. Thread the sensor cable through aperture (C1), located on the right side of the
Series UT electrical unit's base.
8. Connect each colored wire in the cable to the appropriate screw down
termination post at terminal JP5, according to the color coding given in the table
below (if the extension cable wires are black, follow the coding given in brackets).
Wiring the Monitoring Cables
Series UT data can be monitored on a PC via an RS 485 or RS 232 connection to
terminal JP22. You can also connect Series UT to an analog output meter set
between 4 mA and 20 mA using terminal JP32. (Setting the 4 mA and 20 mA values
is described in Chapter 3, Basic Setup.)
To Wire the Digital Interface Cable to JP22:
1. Thread the required cable through the wiring apertures (C2) located at the base
of the electrical unit.
2. Connect each wire in the cable to the appropriate screw down termination post
at terminal JP22, wiring for RS-485 or RS-232, as required:
To Wire the 4 to 20 mA Cable to JP32:
1. Thread the required cable through the wiring apertures located at the base of the
electrical unit.
2. Connect the wires in the cable to the screw down termination posts at terminal
JP32. Connect the positive wire to post 1 and the negative wire to post 2.
Wiring the Relays Cable
Series UT’s electrical unit provides connectors at terminal JP26 for up to five
independently programmable relays. The relays can be used to initiate certain
actions, such as controlling pumps, triggering an alarm or sending a warning
message, or when a defined value is reached. (Defining values for the relays is
described in Chapter 3, Basic Setup.)
To Wire the Relays Cable to JP26 Using VDC Power:
1. Thread the required cable through apertures (C2/C3) located at the base of the
electrical unit.
2. Connect the relay cable wires to the appropriate posts, as shown in Figure 11:
Electrical Unit, page 5.
Wiring the VDC Power Cable
The free end of Series UT’s (UTC-XXX-1XX-X) power cable is connected to the
electrical unit using terminal JP2 when working in VDC.
To Wire the Power Cable to JP2:
1. Thread the required cable through C2 aperture at the base of the electrical unit.
2. Connect the wires in the cable to the appropriate screw down termination posts
at terminal JP2. Connect the negative wire to post 2 and the positive wire to post
1.
Wiring the VAC Power Cable
The free end of Series UT’s (UTC-XXX-2XX-X) power cable is connected to the
electrical unit using terminal JP1 when working in VAC.
To Wire the Power Cable to JP1:
1. Thread the required cable through C4 aperture at the base of the electrical unit.
2. Connect the wires in the cable to the appropriate screw down termination posts
at terminal JP1. Connect the zero wire to post 1 and the phase wire to post 2.
Chapter 3: Basic Setup
This chapter describes how to set up and calibrate Series UT for accurate
measurement monitoring using the basic menu options.
Series UT is supplied with preprogrammed default settings, making it ready for
immediate operation. Measurement readings are displayed on the default screen
as soon as the unit is powered on, as described in Default Screen, page 7.
It is recommended that you replace the default tank height value with the actual
tank height, as described in Setting the Tank Height, page 11. When using Series
UT, the tank height is calculated as the distance from the surface of the sensor to
the bottom of the tank. You should enter this value whenever tank height is
required. (For flow measurement, enter the precise flume height.)
The Series UT main menu (shown on page 7) enables you to access the primary
functions for Series UT operation, so that you can change the default settings and
calibrate Series UT, as required. You can define further specialized function options
for Series UT from the additional menu, as described in Chapter 5, Additional
Features.
Page 6
NOTES:
Ensure that the power is switched off before wiring the sensor cable.
JP5 Post
1
2
3
4
5 Color
Green (Black 1)
Brown (Black 2)
Blue
White (Black 3)
Yellow
NOTES:
Close the glands and conceal any openings to ensure sealing. Do not exceed 250-
inch pounds torque on installation of conduit. The O-ring is suitable for one use
only.
JP22 Post
1
2
3 Wire
B
A
Ground
RS-485
JP22 Post
1
2
3 Wire
TxD
RxD
Ground
RS-232
NOTES:
Close all glands to ensure sealing. Do not exceed 250-inch pounds torque on
installation of conduit. The O-ring is suitable for one use only.
NOTES:
Close the glands to ensure sealing. The O-ring is suitable for one use only. If your
unit is equipped with conduits instead of glands, aperture C3 is not available. Use
aperture C4 instead. Do not exceed 250-inch pounds torque on installation of
conduit.
NOTES:
Close all glands to ensure sealing. The O-ring is suitable for one use only.
HIGH VOLTAGE IN JP1! CAUTION
Figure 12: Series UT Main Menu Screen
NOTES:
The options displayed in the main menu depend on the Series UT model so you
may not necessarily view all the options shown in the above example.