1211
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
P&B
Catalog 1308242
Issued 3-03
O
NC N
A 1 1 1 H
1.88
(47.8)
1.88
(47.8)
2.83
(71.9)
.32
(8.1)
1. 7 6
(44.7)
.64
(16.3)
3.15
(80.0)
CNT series
Multifunction, Digital
Time Delay Relay/Counter
• 10 programmable timing modes + 2 counting modes
• 0.1 sec. to 9,990 hr. programmable timing range
• 1 to 99,900 counting range
• LCD digital display
• Universal (24-240VAC/VDC) and fixed input types
• 10A output relay with DPDT contacts
• Thumbwheel switches for programming
File E22575
File LR15734
Timing and Counting Modes
See the following page for a complete description of all program-
mable timing and counting modes.
Timing Specifications
Timing Ranges: 0.1 to 99.9 / 1 to 999 sec.; 0.1 to 99.9 / 1 to 999 min.;
0.1 to 99.9 / 1 to 999 / 10 to 9,990 hr.
Timing Adjustment: Digital adjustment via thumbwheel switches.
Tolerance: ±0.5% ±0.05 sec.
Delta Time (for AC units add ±1 cycle 60 Hz.): ±0.1% ±0.05 sec.
Repeatability (Including first cycle of operation.): ±0.1% ±0.05 sec.
Reset Time (power interruption): 45 ms, typ.; 60 ms, max.
Minimum Pulse Width, Control: 50 ms.
Recycle Time: 45 ms, typ.; 60 ms, max.
Counting Specifications
Maximum Count: 1 to 999; 10 to 9,990 (÷10); 100 to 99,900 (÷100).
Maximum Count Rate: 100 counts per second.
Mimumum Pulse Width:Count (Control): 3 ms.; Reset: 3 ms.
Available Counting Functions: Operate at preset count and release at
preset count.
Contact Data @ 25°C
Arrangements: 2 Form C (DPDT).
Material: Silver-cadmium oxide alloy.
Rating: 10A @ 30VDC or 277VAC, resistive; 1/2 HP @ 250VAC; 1/3 HP @
120VAC.
Expected Mechanical Life: 10 million operations.
Expected Electrical Life: 100,000 operations, min., at rated load.
Initial Dielectric Strength
Between Open Contacts: 1,000V rms, 60 Hz.
Between All Other Conductors: 1,500V rms, 60Hz.
Ordering Information – Authorized distributors are more likely to stock boldface items listed below.
Input Data @ 25°C
Voltage: Universal Input Type: 24 - 240V ±15%, 50/60 Hz. AC or DC.
Fixed Input Types: 120VAC ±15%, 50/60 Hz and 12VDC.
Power Requirement:
Universal Input Type:10VA @ 240VAC; 5VA @ 120VAC; 1VA @ 24VAC.
10W @ 240VDC; 5W @ 120VDC; 1W @ 24VDC.
Fixed Input Types: 3VA @ 120VAC; 3W @ 12VDC.
Transient Protection: Yes.
Reverse Voltage Protection: Yes.
Outline Dimensions Wiring Diagrams (Bottom Views)
(pins numbered clockwise from keyway)
* Note: Input polarity for DC operation. For most reliable operation on AC, connect high side
to “+” and low side to “–”.
** Important: A dry circuit switch is recommended. A “dry circuit” switch is one rated to
reliably switch currents of less than 50mA. Use of a switch rated for other
than dry circuit may result in failure of the time delay relay to function properly.
Fits 1.77 x 1.77 (45 x 45)
Panel cutout
Universal Input Model
Input Voltage Part Number
24-240VAC/VDC CNT-35-96
Fixed Input Models
Input Voltage Part Number
12VDC CNT-35-26
120VAC CNT-35-76
INPUT*
111
+
_
RETURN
CONTROL
RESET
USE SAME
FOR RESET
Accessories
Part Number Name Description
SSA-24C667 Mounting Clip Ratchet-fit clip slides onto CNT from behind
to secure CNT in panel mount applications.
SSA-24C668 Protective Cover Clear, flexible cover slips snugly over bezel of
CNT to help protect against dust and moisture.
Durable cover also helps prevent inadvertant
changes of programming switch settings.
Mechanical Data
Termination: 11-pin octal style plug.
Enclosure: Beige plastic 1/16 DIN case.
Sockets: Fits either 27E123 or 27E892 (snap-on) screw terminal sockets.
Weight: 4.3 oz. (122g) approximately.
External Control: CONTROL, RESET: Active on contact closure or solid
state switch closure to RETURN, 0-1.0VDC maximum
voltage level (see wiring diagrams for interface circuits.
Environmental Data
Temperature Range: Storage: -20°C to +70°C.
Operating: -10°C to +55°C.
Humidity: 85% relative humidity, non-condensing.
Input Voltages & Limits @ 25°C
Input Nominal Minimum Maximum
Type Voltage Voltage Voltage
Universal 24-240VAC/VDC 20.4VAC/VDC 276VAC/VDC
Fixed 120VAC 102VAC 138VAC
12VDC 10.2VDC 13.8VDC
Note: DC voltage must be filtered (5% p-p ripple max. at nom. voltage).
AC models will operate on 50 or 60 Hz.
INPUT*
111
+
_
RETURN RESET
CONTROL
(COUNT)
EXTERNAL CONTROL SWITCHES**
Users should thoroughly review the technical data before selecting a product part
number. It is recommended that user also seek out the pertinent approvals files of
the agencies/laboratories and review them to ensure the product meets the
requirements for a given application.
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