SSAC KRDM Digi-Timer Catalog Page
Dedicated
= Undefined time
timers
Delay On Make (ON-Delay)
KRDM Digi-Timer
Time Delay Relay
Description
The KRDM 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 KRDM Series is a cost effective approach for OEM applications that require small size,
isolation, reliability, and long life.
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 ...
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
Upon application of input voltage, the time delay
begins. The output is de-energized before and during
the time delay. At the end of the time delay, the output
relay energizes and remains energized until input
voltage is removed.
Reset: Removing input voltage resets the time delay
and output.
Connection
V = Voltage C = Common, Transfer Contact
NO = Normally Open NC = Normally Closed
A knob is supplied for adjustable units, or RT terminals
4 & 5 for external adjust. See external adjustment vs
time delay chart. Relay contacts are isolated. Dashed
lines are internal connections.
Function
Delay On Make
V = Voltage TD = Time Delay R = Reset
NO = Normally Open NC = Normally Closed
→
DIN
rail adaptor
P/N: P1023-20
Mounting bracket
P/N: P1023-6
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
KRDM
Series
Example P/N:
X
Input
–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
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
* If Fixed Delay is selected,
insert delay [0.1 … 1000]
followed by (S) sec. or
[0.1 ... 100] (M) min.
KRDM421 = 120 V AC; Onboard adjust from 0.1 to 10 seconds
KRDM610.5S = 230 V AC; Fixed at 0.5 seconds
See accessory pages for
specifications.
5.14 Low Voltage Products & Systems
1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com
KRDMGen 08.15.06
Delay On Make (ON-Delay)
KRDM Digi-Timer
Time Delay Relay
Technical Data
Time Delay
Range 0.1 s ... 100 m in 5 adjustable ranges or fixed
Repeat Accuracy +/-0.5% or 20 ms, whichever is greater
Tolerance (Factory Calibration) ≤ +/-5%
Recycle 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 AC/DC -15% ... +20%
110 V DC 120 & 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;
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)
Electrical -- 1 x 10
5
Dedicated
timers
Output Current/Ambient Temp.
External Resistance vs Time Delay
KRDMGen 08.15.06
Mechanical View
External Adjust Detail Replaces Knobs if Ordered
Inches (Millimeters)
Low Voltage Products & Systems 5.15
ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202
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