SSAC KRDS Digi-Timer Catalog Page

Dedicated

timers

Single Shot (Pulse Former)

KRDS Digi-Timer
Time Delay Relay

Description

The KRDS Series is a compact time delay relay measuring only 2 in. (50.8 mm) square. Its microcontroller
timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibra­tion, and humidity. The KRDS Series is a cost effective approach for OEM applications that require small
size, isolation, reliability, and long life.

Compact Time Delay Relay
+/-0.5% Repeat Accuracy
Isolated 10 A SPDT Output

Contacts

Onboard or External
Adjustment or Fixed Time
Delay

Delays from 100 ms...1000 m
in 6 Ranges

+/-5% Factory Calibration

Input Voltages from 12...230 V
in 5 Ranges

Approvals:

Accessories

B

External adjust
potentiometer

A

P/Ns:

P1004-95 (fig A)
P1004-95-X (fig B)

Versa-knob
P/N: P0700-7

Operation

Input voltage must be applied before and during timing.
Upon momentary or maintained closure of the initiate
switch, the output relay 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 energize if the initiate switch is closed when
input voltage is applied.
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.

Connection

Function

Single Shot

V = Voltage S1 = Initiate Switch R = Reset
TD = Time Delay NO = Normally Open
NC = Normally Closed

Mounting bracket
P/N: P1023-6

V = Voltage S1 = Initiate Switch
C = Common, Transfer Contact NO = Normally Open
NC = Normally Closed UTL = Untimed Load

Female quick
connect
P/Ns:

P1015-64
P1015-13 (AWG 10/12)

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

DIN rail P/Ns:

017322005 (Steel)
C103PM (Al)

→

DIN rail adaptor
P/N:

P1023-20

See accessory pages for

(AWG 14/16)

←

A knob is supplied for adjustable units. The unti­med load is optional. Relay contacts are isolated.
Dashed lines are internal connections.

Ordering Table

KRDS

Series Input

Example P/N:

X

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

X

Adjustment

–1 - Fixed
–2 - Onboard
Adjustment
–3 - External
Adjustment

KRDS421 = 120 V AC; Onboard adjust from 0.1 to 10 seconds
KRDS610.5S = 230 V AC; Fixed at 0.5 seconds

X

Time Delay *

–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

* If Fixed Delay is selec­ted, insert delay [0.1 …

1000] followed by (S)

sec. or (M) min.

specifications.

5.82 Low Voltage Products & Systems

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

KRDSGen 08.15.06

Single Shot (Pulse Former)

KRDS Digi-Timer
Time Delay Relay

Technical Data

Time Delay

Type Microcontroller with watchdog circuitry
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
Initiate Time ≤ 40 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 V AC 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
Life (Operations) Mechanical -- 1 x 107;

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

External Resistance vs Time Delay

Electrical -- 1 x 10

5

Dedicated

timers

Output Current/Ambient Temp.

Mechanical View

External Adjust Detail Re­places Knobs if Ordered

Inches (Millimeters)

KRDSGen 08.15.06

Low Voltage Products & Systems 5.83

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