SSAC KRD3 Series Data Sheet
KRD3 SeriesTimer - Recycling
Connection:
L1 N/L2
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.
The KRD3 Series measures 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 KRD3 Series is a cost effective
approach for OEM applications that require small
size, isolation, reliability, and long life.
Operation (Recycling Flasher - ON Time First):
Upon application of input voltage, the output energizes
and the T1 ON time begins. At the end of the ON time,
the output de-energizes and the T2 OFF time begins. At
the end of the OFF time, the output energizes and the cycle
repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to T1 ON time.
Operation (Recycling Flasher - OFF Time First):
Upon application of input voltage, the T2 OFF time begins.
At the end of the OFF time, the T1 ON time begins and
the load energizes. At the end of T1, T2 begins and the
load de-energizes. This cycle repeats until input voltage
is removed.
Reset: Removing input voltage resets the output and the
sequence to T2 OFF time.
For more information see:
Appendix A, pages 156-164 for function descriptions
and diagrams.
Appendix B, page 165, Figure 1 for dimensional drawing.
External Resistance vs. Time Delay:
Features
• Compact time-delay relay
• 10A, SPDT output contacts
• Factory xed, onboard or external adjust
• Delays from 0.1s - 100m in 5 ranges
• ±0.5% repeat accuracy
• ±5% factory calibration
• Input voltages from 12 to 230V in 5 options
Approvals:
Auxiliary Products:
• External adjust potentiometer:
P / N: P1 0 04 - 95
P/N: P1004-95-X
• Female quick connect:
P / N : P 1 0 1 5 - 1 3 ( AW G 1 0 / 1 2 )
P /N : P 1 0 1 5- 6 4 ( A W G 14 / 1 6 )
• Quick connect to screw adaptor:
P/N: P1015-18
• Versa-knob: P/N: P0700-7
• Mounting bracket: P/N: P1023-6
• DIN rail: P/N: C103PM (Al)
• DIN rail adaptor: P/N: P1023-20
Available Models:
KRD3110.4SA
KRD31160SA
If desired part number is not listed, please call
us to see if it is technically possible to build.
KRD3420A
KRD3434A
Output Current/Ambient
Temperature:
Order Table:
KRD3
X
Input Voltage
─1 - 12VDC
─2 - 24VAC
─4 - 120VAC
─5 - 110VDC
─6 - 230VAC
X
Adjustment
─1 - Fixed
─2 - Onboard knob
─3 - External adjust
X
Time Delay*
─0 - 0.1 - 10s
─1 - 1 - 100s
─2 - 10 - 1000s
─3 - 0.1 - 10m
─4 - 1 - 100m
Specications
Time Delay
Range ................................0.1s - 100m in 5 adjustable ranges or xed
Repeat Accuracy ......................±0.5% or 20ms, whichever is greater
Tolerance (Factory Calibration) ..........≤ ± 5%
Reset Time ............................≤ 150ms
Time Delay vs Temp. & Voltage ..........≤ ±5%
Input
Voltage ...............................12, 24 or 110VDC; 24, 120, or 230VAC
Tolerance 12VDC & 24VDC/AC .....-15% - 20%
110VDC, 120 or 230VAC ...-20% - 10%
AC Line Frequency/DC Ripple ..........50/60 Hz / ≤ 10%
Power Consumption ...................AC ≤ 2VA; DC ≤ 2W
Output
Type .................................Isolated relay contacts
Form .................................SPDT
Rating (at 40°C) .......................
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
10A resistive @ 125VAC;
X
Operating Sequence
─A - ON Time First
─B - OFF Time First
*If xed delay is selected, insert delay (0.1
- 1000) followed by (S) sec, or (0.1 - 100)
(M) min.
Max. Switching voltage ..............250VAC
Life (Operations) ...................Mechanical - 1 x 107; Electrical - 1 x 10
Protection
Circuitry ..........................Encapsulated
Isolation Voltage ....................≥ 1500V 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
Dimensions ........................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° to 60°C / -40° to 85°C
Humidity ..........................95% relative, non-condensing
Weight ............................≅ 2.6 oz (74 g)
5
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