Time Delay Relays
Recycle
TDR SERIES
Relay Output, Recycling Time Delay Relay
Description
The TDR Series of time-delay relays are comprised of digital
circuitry and an isolated, 10A relay output. The ON and OFF delays
are selected by means of two, ten position binary switches, which
allow the setting of the desired delay to be precise every time.
Operation (Recycling - ON Time First)
Upon application of input voltage, the green LED glows, the
output relay is energized, the red LED glows, and the T1 ON
time begins. At the end of the ON time, the output
de-energizes, the red LED turns OFF and the T2, OFF time
begins. At the end of the OFF time, the output relay energizes
and the cycle repeats as long as input voltage is applied.
Reset:
Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the green LED glows, the T1
OFF time begins, the load is OFF At the end of the OFF time,
.
the T2 ON time begins, the load energizes, and the red LED
glows. At the end of the ON time the load de-energizes and
the red LED turns OFF The cycle repeats until input voltage
.
is removed.
Reset:
Removing input voltage resets the output and the
sequence to the OFF time.
Relay contacts are isolated
L1
N/L2
8-PIN
Wiring Diagram
Features & Benefits
FEATURES
ON & OFF time delay
settings
3 Time Ranges Available
(0.1s to 2.8h)
Microcontroller based
DIP switch adjustment
Isolated output contacts
LED indication
(select models)
BENEFITS
Independent adjustment allows for greater flexibility
Makes it versatile for use in many applications
Repeat Accuracy + / - 0.1% or 20 ms, whichever is
greater; Setting Accuracy + / - 2% or 50 ms,
whichever is greater
Provides first time setting accuracy
Allows control of loads for AC or DC voltages
Provides visual indication of relay status
Ordering Information
MODEL
INPUT VOLTAGE
LED
SEQUENCE
ON TIME (SEC)
OFF TIME (SEC)
TDR1A22
TDR2A23
TDR4A11
TDR4A12
TDR4A13
TDR4A22
TDR4A23
TDR4A33
TDR4B22
TDR4B23
TDR6A22
12VDC
24VAC
120VAC
120VAC
120VAC
120VAC
120VAC
120VAC
120VAC
120VAC
230VAC
X
X
X
X
X
X
X
X
X
X
ON time first
ON time first
ON time first
ON time first
ON time first
ON time first
ON time first
ON time first
OFF time first
OFF time first
ON time first
1-1023 in 1s increments
1-1023 in 1s increments
0.1-102.3 in 0.1s increments
0.1-102.3 in 0.1s increments
0.1-102.3 in 0.1s increments
1-1023 in 1s increments
1-1023 in 1s increments
10-10230 in 10s increments
1-1023 in 1s increments
1-1023 in 1s increments
1-1023 in 1s increments
1-1023 in 1s increments
10-10230 in 10s increments
0.1-102.3 in 0.1s increments
1-1023 in 1s increments
10-10230 in 10s increments
1-1023 in 1s increments
10-10230 in 10s increments
10-10230 in 10s increments
1-1023 in 1s increments
10-10230 in 10s increments
1-1023 in 1s increments
If you don’t find the part you need, call us for a custom product 800-843-8848
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/tdr
Rev: 1-A-062116
Time Delay Relays
Recycle
TDR SERIES
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC8 hold-down clips.
PSC8 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use with
NDS-8 Octal Socket. Sold in pairs.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Specifications
Time Delay
Type
Range**
Repeat Accuracy
Setting Accuracy
Reset Time
Recycle Time
Time Delay vs Temp.
& Voltage
Input
Voltage
Tolerance
12VDC & 24VDC/AC
110 to 230VAC/DC
AC Line Frequency/DC Ripple
Power Consumption
Input LED Indicator
Output
Type
Form
Rating
Life
Max. Switching Voltage
Relay LED Indicator
Protection
Isolation Voltage
Insulation Resistance
Polarity
Mechanical
Mounting
Dimensions
Digital integrated circuitry
0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
10 - 10,230s in 10s increments
±0.1% or 20ms, whichever is greater
±2% or 50ms, whichever is greater
≤ 50ms
≤ 150ms
±5%
12, 24/28, or 110VDC; 24, 120, or 230VAC
-15% - 20%
-20% - 10%
50/60 Hz/<=10%
≤ 3.25W
Green; on when input voltage is applied
Electromechanical relay
DPDT
10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Mechanical - 1 x 10
7
; Electrical - 1 x 10
6
250VAC
Red; ON when output relay energizes
≥ 1500V RMS input to output
≥ 100 MΩ
DC units reverse polarity protected
Plug-in socket
H
81.3 mm (3.2”);
W
60.7 mm (2.39”);
D
45.2 mm (1.78”)
Octal 8-pin plug-in
Binary Switch Operation
** For CE approved applications, power must be removed from the unit when a switch position
is changed.
Function Diagram
RECYCLING (ON FIRST)
V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Termination
Environmental
Operating/Storage
Temperature
Weight
-20° to 65°C/-30° to 85°C
≅
6 oz (170 g)
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/tdr
Rev: 1-A-062116
Embedded System
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