SSAC KRDR Digi-Timer Catalog Page

Dedicated

timers

Recycling (Pulse Generator)

KRDR Digi-Timer
Time Delay Relay

Description

The KRDR 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 KRDR Series is a cost effective recycling timer for OEM applications that require small size,
isolation, reliability, and long life.

Compact Time Delay Relay
Full 10 A SPDT Output

Contacts

Onboard Adjustment or Fixed

Time Delay

Delays from 100 ms...1000 m

in 6 Ranges

Input Voltages from 120...230V

in 6 Ranges

+/-0.5% Repeat Accuracy
+/-5% Factory Calibration

Approvals:

Operation (ON Time First)

Upon application of input voltage, the output relay
energizes and the T2 ON time begins. At the end of
the ON time, the output de-energizes and the T1 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
the time delays, and returns the sequence to the ON
time.

Operation (OFF Time First)

Upon application of input voltage, the T1 OFF time
begins. At the end of the OFF time, the T2 ON time
begins and the load energizes. At the end of the ON
time the load de-energizes, and the cycle repeats until
input voltage is removed.
Reset: Removing input voltage resets the output and
the sequence to the OFF time.

Connection

Function

Recycling (ON First)

Recycling (OFF First)

V = Voltage R = Reset

T1 = OFF Time T2 = ON Time

NO = Normally Open NC = Normally Closed

T1 = OFF Time T2 = ON Time

A knob is supplied for adjustable units. Dashed
lines are internal connections.

Ordering Table

KRDR

Series

Example P/N:

5.134 Low Voltage Products & Systems

1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com

X

Input

–1 - 12 V DC
–2 - 24 V AC
–3 - 24 V DC
–4 - 120 V AC
–5 - 110 V DC
–6 - 230 V AC

KRDR421A1 = 120 V AC, ON Time and OFF Time Onboard Adjustable, with ON Time from 1 to 100 seconds, ON

Time First Operation, with OFF Time from 1 to 100 seconds

Fixed- KRDR631B0.5S = 230 V AC, ON Time Onboard Adjustable from 1 to 100 seconds, OFF Time First Operation,
with OFF Time

X

Adjustments

–1 - Both Times Fixed
–2 - Both Times Adj.
–3 - ON Time Adj.
OFF Time Fixed
–4 - ON Time Fixed,
OFF Time Adj.

* If Fixed Delay is selected, insert delay [0.1 … 999] followed by (S) sec. or (M) min.

X X X

T2, ON Time *

–0 - 0.1 ... 10 s
–1 - 1 ... 100 s
–2 - 10 ... 1000 s
–3 - 0.1 ... 10 m
–4 - 1 ... 100 m
–5 - 10 ...1000 m

Operating Sequence

–A - ON Time First
–B - OFF Time First

T1, OFF Time *
–0 - 0.1 ... 10 s
–1 - 1 ... 100 s
–2 - 10 ... 1000 s
–3 - 0.1 ... 10 m
–4 - 1 ... 100 m
–5 - 10 ...1000 m

KRDRGen 08.15.06

Recycling (Pulse Generator)

KRDR Digi-Timer
Time Delay Relay

Technical Data

Time Delay

Range 0.1 s ... 1000 m in 6 adjustable ranges or fixed
Repeat Accuracy +/-0.5 % or 20 ms, whichever is greater
Tolerance (Factory Calibration) ≤ +/-5%
Reset Time ≤ 150 ms
Time Delay vs. Temperature & Voltage ≤ +/-5%

Input

Voltage 12, 24 or 110 V DC; 24, 120 or 230 V AC
Tolerance 12 V DC & 24 V DC/AC -15% ... +20%
110 V DC & 120 or 230 V AC -20% ... +10%
AC Line Frequency/DC Ripple 50 ... 60 Hz / ≤ 10%
Power Consumption AC ≤ 2 VA; DC ≤ 2 W

Output

Type Isolated relay contacts
Form Single pole double throw (SPDT)
Rating (at 40°C) 10 A resistive at 125 V AC
5 A resistive at 230 V AC & 28 V DC; 1/4 hp at 125 V AC
Max. Switching Voltage 250 V AC
Life (Operations) Mechanical -- 1 x 107; Electrical -- 1 x 10

Protection

Circuitry Encapsulated
Isolation Voltage ≥ 1500 V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected

Mechanical

Mounting Surface mount with one #10 (M5 x 0.8) screw
Package 2 x 2 x 1.21 in. (50.8 x 50.8 x 30.7 mm)
Termination 0.25 in. (6.35 mm) male quick connect terminals

Environmental

Operating/Storage Temperature -20°C ... +60°C/-40°C ... +85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)

5

Dedicated

timers

Output Current/Ambient Temp.

Accessories

Mounting bracket
P/N: P1023-6

Quick connect to
screw adaptor
P/N: P1015-18

→

DIN rail adaptor
P/N: P1023-20

Female quick connect
P/Ns:

P1015-64

(AWG 14/16)

P1015-13 (AWG 10/12)

DIN rail P/Ns:

017322005 (Steel)
C103PM (Al)

←

Mechanical View

Inches (Millimeters)

T1 = OFF time T2 = ON time

A knob is supplied for adjustable
time delays

See accessory pages for specifications.

KRDRGen 08.15.06

Low Voltage Products & Systems 5.135

ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202