Interval (Impulse ON)
KRDI Digi-Timer
Time Delay Relay
Description
The KRDI Series is a compact time delay relay measuring only 2 in. (50.8 mm) square. Its solid state timing
circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and
humidity. The KRDI Series is a cost effective approach for OEM applications that require small size, isolation,
reliability, and long life.
Operation
Upon application of input voltage, the time delay
begins. The output relay 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.
Reset:
Removing input voltage resets the time delay
and the output.
Function
Interval
Compact Time Delay Relay
Full 10 A SPDT Output
Contacts
Onboard or External Adjust
or Fixed Delay
Delays from 100 ms...100 m
in 5 Ranges
+/-0.5% Repeat Accuracy
+/-5% Factory Calibration
Input Voltages from 12 ...
120 V in 4 Ranges
Approvals:
V = Voltage
R = Reset
TD = Time Delay
NO = Normally Open NC = Normally Closed
= Undefined time
Connection
Accessories
B
A
External adjust
potentiometer
P/Ns:
P1004-95 (fig A)
P1004-95-X (fig B)
Versa-knob
P/N: P0700-7
Mounting bracket
P/N: P1023-6
V = Voltage C = Common, Transfer Contact
NO = Normally Open NC = Normally Closed
A knob is supplied for adjustable units, or R
T
terminals 4 & 5 for external adjust. See external
adjustment vs time delay chart. Relay contacts
are isolated. Dashed lines are internal connec-
tions.
Female quick
connect
P/Ns:
P1015-64
(AWG 14/16)
P1015-13
(AWG 10/12)
Quick connect to
screw adaptor
P/N: P1015-18
DIN rail P/Ns:
017322005 (Steel)
C103PM (Al)
Ordering Table
Ordering Table
KRDI
Series
X
Input
–1 - 12 V DC
1
2
–2 - 24 V AC/DC
–4 - 120 V AC
4
–5 - 110 V DC
5
X
Adjustment
1
–1 - Fixed
2
–2 - Onboard
Adjustment
–3 - External
3
Adjustment
X
Time Delay *
–0 - 0.1 ... 10 s
0
–1 - 1 ... 100 s
1
–2 - 10 ... 1000 s
2
–3 - 0.1 ... 10 m
3
–4 - 1 ... 100 m
4
* If Fixed Delay is selected, insert delay
[0.1 …
1000
followed by (S) sec. or
1000]
0.1
S
[0.1 ...
100
(M) min.
100] M
0.1
01.12.05
KRDIGen
←
→
DIN rail adaptor
P/N: P1023-20
See accessory pages for
specifications.
5.140
Example P/N:
KRDI421
Fixed –
KRDI410.5S
Low Voltage Products & Systems
Interval (Impulse ON)
KRDI Digi-Timer
Time Delay Relay
Technical Data
Time Delay
Range
Repeat Accuracy
Tolerance (Factory Calibration)
Reset Time
Time Delay vs. Temperature & Voltage
Input
Voltage
Tolerance
12 V DC & 24 V DC/AC
110 V DC & 120 V AC
Line Frequency/DC Ripple
Power Consumption
Output
Type
Form
Rating (at 40°C)
Life
Protection
Circuitry
Isolation Voltage
Insulation Resistance
Polarity
Mechanical
Mounting
Package
Termination
Environmental
Operating / Storage Temperature
Humidity
Weight
0.1 s ... 100 m in 5 adjustable ranges or fixed
+/-0.5% or 20 ms, whichever is greater
≤
+/- 5%
≤
150 ms
≤
+/-5%
12, 24 or 110 V DC; 24 ...120 V AC
-15% ... +20%
-20% ... +10%
50 ... 60 Hz/≤ 10%
AC
≤
2 VA; DC
≤
2 W
Isolated relay contacts
Single pole double throw (SPDT)
10 A resistive at 125 V AC
5 A resistive at 28 V DC; 1/4 hp at 125 V AC
Mechanical -- 1 x 10
7
; Electrical -- 1 x 10
5
Encapsulated
≥
1500 V RMS input to output
≥
100 MΩ
DC units are reverse polarity protected
Surface mount with one #10 (M5 x 0.8) screw
2 x 2 x 1.21 in. (50.8 x 50.8 x 30.7 mm)
0.25 in. (6.35 mm) male quick connect terminals
-20°C ... +60°C / -40°C ... +85°C
95% relative, non-condensing
≅
2.6 oz (74 g)
Output Current/Ambient Temp.
External Resistance vs Time Delay
Mechanical View
External Adjust Detail
Replaces Knobs if Ordered
Inches (Millimeters)
KRDIGen
01.12.05
Low Voltage Products & Systems
5.141
Microcontroller MCU
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