Time Delay Relays
Dedicated - Single Shot
TSDS SERIES
Description
TheTSDS Series is designed for more demanding commercial
and industrial applications where small size and accurate
performance are required. The factory calibration for fixed
time delays is within 1% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the time delay. The
TSDS Series is rated to operate over an extended temperature
range. Time delays of 0.1 seconds to 1000 minutes are available.
The output is rated 1A steady and 10A inrush. The modules are
totally solid state and encapsulated to protect the electronic
circuitry. This product is suitable for many applications, including
dispensing, welding, and exposure timing.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output energizes for a measured interval of time. At the end
of the delay, the output de-energizes. Opening or reclosing the
initiate switch during timing has no affect on the time delay.
The output will not energize if the initiate switch is closed when
input voltage is applied.
Wiring Diagram
(Positive Switching)
(Negative Switching)
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
L1
N/L2
V = Voltage
L =Timed Load
UTL = Optional Untimed Load
Features & Benefits
FEATURES
BENEFITS
S1 = Initiate Switch
Compact, low cost
design measuring 2 in.
(50.8mm) square
R
is used when external
T
Allows flexiblility for OEM applications
adjustment is ordered.
Repeat Accuracy + / - 0.5%,
Factory calibration + / - 1%
Microcontroller based
1A Steady, 10A inrush
solid-state output
Provides 100 million operations in typical conditions.
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Totally solid state
and encapsulated
Wide temperature
range: -40° to 75°C
Reliable in demanding commercial and
industrial applications
Accessories
Ordering Information
INPUT
SWITCHING
MODE
MODEL
ADJUSTMENT TIME DELAY
P1004-95, P1004-95-X Versa-Pot
VOLTAGE
Panel mountable, industrial potentiometer
TSDS2110S
TSDS320N
TSDS321P
TSDS421
24VAC
Fixed
10s
n/a
recommended for remote time delay adjustment.
24VDC
24VDC
120VAC
External
External
External
0.1 - 10s
1 - 100s
1 - 100s
Negative
Positive
n/a
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
If you don’t find the part you need, call us for a custom product 800-843-8848
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/tsds
Rev: 1-A-062216