Time Delay Relays
Dedicated - Interval
KSD2 SERIES
Interval Timer
Description
The KSD2 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 within 5% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the selected
time delay. This series is designed for input voltages of 24, 120
or 230VAC. Time delays of 0.1 seconds to 1000 minutes are
available in 6 ranges. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated
to protect the electronic circuitry. An excellent choice for most
OEM pulse shaping, maximum run time, and other process
control applications.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output energizes during the time delay. At the end of the time
delay, the output de-energizes and remains de-energized until
input voltage is removed.
Wiring Diagram
L1
N/L2
Reset:
Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES
Microcontroller based
Compact, low
cost design
R
T
is used when
external adjustment
is ordered.
BENEFITS
Repeat Accuracy + / - 0.5%,
+ / -5% time delay accuracy
Allows flexiblility for OEM applications
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
1A Steady solid-state
output, 10A inrush
Totally solid state
and encapsulated
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
Ordering Information
MODEL
INPUT VOLTAGE VAC
ADJUSTMENT
TIME DELAY
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64
(AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
KSD2221
KSD2413M
KSD2420
24
120
120
External
Fixed
External
1 - 100s
3m
0.1 - 10s
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/ksd2
Rev: 1-A-062116
Time Delay Relays
Dedicated - Interval
KSD2 SERIES
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 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 35 mm DIN
type rail with two #10 screws.
Specifications
Time Delay
Range
Repeat Accuracy
Tolerance
(Factory Calibration)
Reset Time
Time Delay vs. Temperature
& Voltage
Input
Voltage
Tolerance
AC Line Frequency
Power Consumption
Output
Type
Form
Maximum Load Current
OFF State Leakage Current
Voltage Drop
Protection
Circuitry
Dielectric Breakdown
Insulation
Resistance
Mechanical
Mounting
Dimensions
Termination
Environmental
Operating/Storage
Temperature
Humidity
Weight
0.1s - 1000m in 6 adjustable ranges or fixed
±0.5% or 20ms, whichever is greater
≤ ±5%
≤ 150ms
≤ ±10%
24, 120, or 230VAC
±20%
50/60 Hz
≤ 2VA
Solid state
NO, closed during timing
1A steady state, 10A inrush at 60°C
≅
5mA @ 230VAC
≅
2.5V @ 1A
Encapsulated
≥ 2000V RMS terminals to mounting surface
≥ 100 MΩ
Surface mount with one #10 (M5 x 0.8) screw
H
50.8 mm (2”);
W
50.8 mm (2”);
D
30.7 mm (1.21”)
0.25 in. (6.35 mm) male quick connect
terminals
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the R
T
terminals; as the resistance increases the tie
delay increases.
When selecting an external R
T
, add the tolerances of the timer and the R
T
for the full time range adjustment.
Examples:
1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn R
T
. For 1 to 100 S use a 100 K ohm R
T
.
-40° to 60°C / -40° to 85°C
95% relative, non-condensing
≅
2.4 oz (68 g)
Function Diagram
INTERVAL (IMPULSE-ON)
V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/ksd2
Rev: 1-A-062116
嵌入式系统
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