Time Delay Relays
Dedicated - Recycle
ESDR SERIES
Description
The ESDR Series offers independent time adjustment of both
delay periods. Adjustment options include fixed, onboard or
external adjust. The ESDR is recommended for air drying,
automatic oiling, life testing, chemical metering and automatic
duty cycling. This series is designed for general purpose
commercial and industrial applications where a small, cost
effective, reliable, solid-state timer is required. The factory
calibration for fixed time delays is <±±5. The repeat accuracy,
under stable conditions, is 0.15 of the selected time delay.
This series is designed for input voltages of 12VDC to 230VAC
in five ranges. Time delays of 0.1 seconds to 1000 minutes are
available in six ranges. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated to
protect the electronic circuitry.
Wiring Diagram
(Positive Switching)
(Negative Switching)
L1
N/L2
V
L
= Voltage
= Load
T1 = ONTime
T2 = OFFTime
Operation (Recycling - ONTime First)
Upon application of input voltage, the output energizes and
theT1, ON time begins. At the end of the ON time, the output
de-energizes and theT2, OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
R
is used when external
T
adjustment is ordered.
A knob is supplied for
adjustment on the unit;
terminals for external
adjustment.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
Operation (Recycling - OFFTime First)
Upon application of input voltage, theT2 OFF time begins. At the
end of the OFF time, the output energizes and theT1 ON time
begins. At the end of the ON time, the output de-energizes and
the cycle repeats as long as input voltage is applied.
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
Features & Benefits
FEATURES
BENEFITS
Repeat Accuracy + / -0.1%,
Factory calibration + / - 5%
Microcontroller based
P0700-7 Versa-Knob
Designed for 0.2± in (6.3± mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
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
P1015-64 (AWG 14/16) Female Quick
Connect
These 0.2± in. (6.3± mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
ON/OFF recycling with
independent adjustment
of both time periods
Separate on and off timing settings are knob
adjustable for added flexibility
Compact, low cost
design measuring 2 in.
(50.8mm) square
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.2± in. (6.3± mm) male quick
connect terminals.
Allows flexiblility for OEM applications
Ordering Information
See next page.
C103PM (AL) DIN Rail
3± mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 3± mm DIN
type rail with two #10 screws.
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/esdr
Rev: 1-A-061016
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