Dwyer TDS - Manual (Page 4)

Step Five
WIRING
Wiring to a Dwyer Controller:
TSP Series Controller
TDC Series Controller
(-)
(+)
INVER
T
+/-
INPUT 1
DELAY
AC
AC
GND
NC
C
NO
R
P
115 VAC
220 VAC
(S)
Green Black Shield - Not Used White Red
+
R E L A Y 1 R E L A Y 2
P O W E R I N V E R T I N V E R T D E L A Y
- - + - -
D E L A Y
ONOFF
L A T C H
I N P U T 1 I N P U T 2 A I N P U T 2 B
Green
Red
White
Black
Not Used - Shield
Supply Voltage:
The supply voltage to the TDS series flow switch should never exceed
a maximum of 36 VDC. Use controllers or power supplies, with a
minimum output of 12 VDC or a maximum output of 36 VDC.
Required Cable Length:
Determine the length of cable required between the TDS series flow
switch and its point of termination. Allow enough slack to ensure the
easy installation, removal and/or maintenance of the sensor. The
cable length may be extended up to a maximum of 1000 feet, using a
well-insulated, 14 to 20 gauge shielded four conductor cable.
Wire Stripping:
Using a 10 gauge wire stripper, carefully remove the outer layer of
insulation from the last 1-1/4" of the sensor's cable. Unwrap and dis-
card the exposed foil shield from around the signal wires, leaving the
drain wire attached if desired. With a 20 gauge wire stripper, remove
the last 1/4" of the colored insulation from the signal wires.
Signal Output (Relay switching):
Allows the sensor to switch a small load on or off directly, using an
internal 1A relay [120 VAC/VDC or (CE: 60 VAC/VDC)]. The
NO/NC status is set by the polarity of the voltage feeding the red and
black wires. The green wire is the common for the relay and the white
wire is the NO or NC, depending on the polarity of red and black.
Normally Open Wiring:
Red
Black
Shield
Ground
24 VDC
Power Supply
+
-
Multimeter
(Continuity)
-
+
White
Green
Step Six
WIRING
[Flow Condition]
Sensor
(NO)
RED
GRN
SHLD
WHT
BLK
LOAD
LOAD
OR
[+]
[-]
[Flow Condition]
Sensor
(NC)
BLK
GRN
SHLD
WHT
RED
LOAD
LOAD
OR
[+]
[-]
[Flow Condition]
Sensor
(NO)
RED
GRN
SHLD
WHT
BLK
LOAD
[AC Power]
[+]
[-]
[Flow Condition]
Sensor
(NC)
BLK
GRN
SHLD
WHT
RED
LOAD
[AC Power]
[+]
[-]
Wiring the Relay Output:
The TDS series relay output can be wired as a dry contact to a VDC
or VAC power source. The TDS series does require 12 - 36 VDC
power to operate the sensor and switch the relay. All illustrations
below identify a Dry switch state as the normal position of the relay.
Switching a Normally Open DC Load:
The Red wire connects to Positive (+) of the power supply and the
Black wire connects to Negative (-). The LOAD can be attached to
either the Green or White wires. Complete the circuit by either con-
necting the Green to (+) VDC power or White to (-) VDC power (see
illustration below).
Switching a Normally Closed DC Load:
The Black wire connects to Positive (+) of the power supply and the
Red wire connects to Negative (-). The LOAD can be attached to
either the Green or White wires. Complete the circuit by either con-
necting the Green to (+) VDC power or White to (-) VDC power (see
illustration below).
Switching a Normally Open AC Load:
The Red wire connects to Positive (+) of the DC power supply and the
Black wire connects to Negative (-). The LOAD can be attached to
the Green wire and the Hot of the VAC power. Connect the White to
the Neutral of the VAC power (see illustration below).
Switching a Normally Closed AC Load:
The Black wire connects to Positive (+) of the DC power supply and
the Red wire connects to Negative (-). The LOAD can be attached to
the Green wire and the Hot of the VAC power. Connect the White to
the Neutral of the VAC power (see illustration below).