5
UR21S-MOI-IT-W-ML-10-22-Rev0
Watts Water Technologies, Inc.
EN
Configuration
Sensor is supplied with a basic programming which is the one
indicated as default in the chapter of the technical features.
To change these settings, disconnect the device, make all the
necessary settings using the triple jumpers J4 or the Dip Switch
SW1 shown in the figure and supply the device again; in partic-
ular
4…20mA Output reference selection:
Sensor is basic set to have the negative of the supply signal
as the 4÷20mA signal reference; to change this setting it is
necessary to move the triple jumpers J4 as shown in the
figure:
Ref. to - (default) Ref. to +
4…20mA Output Signal Type Configuration
To set the 4…20mA output signal type, operator has to use
the 5th selector of the dip-switch in SW1 position, particu-
larly:
Alarm Thresholds Settings:
To set the intervention thresholds of the optional relay board
or of the 4÷20mA output threshold operation, it is neces-
sary to act on the first four dip-switch selectors of the SW1
position; in particular thresholds expressed as a percentage
of the Full Scale are the followig:
(*) When the first four dip-switch selectors are in the OFF position,
the trip thresholds can be only set by TUS40.. service and mainte-
nance terminal or via Display (DR ... or DN Board ...). In the event
that this selection is made without the presence of the service
terminal, the device will take the default thresholds as intervention
thresholds. For the use of the terminal see the relative operating
manual. If the Display Board DR- or DN- is present, TUS40.. termi-
nal is not usable.
Mechanical Installation of the
optional Relay Card or optional
PhotoMos Cards with resistive
output variation
On the main electronic card it is possible to insert, in a special
connector named CN1, a module having on board N. 4 relays
with changeover contact that will be activated in correspon-
dence of the pre-alarm events, 1st alarm threshold, 2nd alarm
threshold and faulty sensor, and the relative LEDs signaling.
Follow the steps below to insert the card:
Electrical Installation of the
optional Relay Card
After the relay card is mechanically installed it is necessary to
provide for its electrical configuration by selecting the relay
control logic and the type of contact that is required on the
terminal board (NC or NO).
Elastic Flag
Proportional Output
(4…20mA)
Step Output (0-10-20mA)
CN1 Connector
Phase 1
Insert on the main
electronic card the
card guide supplied
with the card, taking
care to turn the elastic
flag towards the main
terminal board.
Locate the
connector CN1.
Card Guide
(with Elastic Flag)
Phase 2
Fully insert the card, taking care to pull
the elastic flag of card guide towards the
terminal board of the optional card.
Phase 3
Check the positioning of the card checking that
all pins are internal to the CN1 connector and
that, by practing a slight pull upwards, the card
remains in position due to correctly hooked
and held by the elastic flag of the card guide.
Phase 4
Mark the box showing the presence
of the relay card inside the device
with a permanent marker.
2
1
2
1
6
5
6
5
