Catalog 1308242 Issued 3-03 P&B 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 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. Timing and Counting Modes Input Data @ 25°C See the following page for a complete description of all program- Voltage: Universal Input Type: 24 - 240V ±15%, 50/60 Hz. AC or DC. Fixed Input Types: 120VAC ±15%, 50/60 Hz and 12VDC. mable timing and counting modes. Power Requirement: Universal Input Type: 10VA @ 240VAC; 5VA @ 120VAC; 1VA @ 24VAC. Timing Specifications 10W @ 240VDC; 5W @ 120VDC; 1W @ 24VDC. Timing Ranges: 0.1 to 99.9 / 1 to 999 sec.; 0.1 to 99.9 / 1 to 999 min.; Fixed Input Types: 3VA @ 120VAC; 3W @ 12VDC. 0.1 to 99.9 / 1 to 999 / 10 to 9,990 hr. Transient Protection: Yes. Timing Adjustment: Digital adjustment via thumbwheel switches. Reverse Voltage Protection: Yes. Tolerance: ±0.5% ±0.05 sec. Delta Time (for AC units add ±1 cycle 60 Hz.): ±0.1% ±0.05 sec. Input Voltages & Limits @ 25°C Repeatability (Including first cycle of operation.): ±0.1% ±0.05 sec. Input Nominal Minimum Maximum Reset Time (power interruption): 45 ms, typ.; 60 ms, max. Type Voltage Voltage Voltage Minimum Pulse Width, Control: 50 ms. Recycle Time: 45 ms, typ.; 60 ms, max. Universal 24-240VAC/VDC 20.4VAC/VDC 276VAC/VDC Fixed 120VAC 102VAC 138VAC Counting Specifications 12VDC 10.2VDC 13.8VDC Maximum Count: 1 to 999; 10 to 9,990 (÷10); 100 to 99,900 (÷100). Note: DC voltage must be filtered (5% p-p ripple max. at nom. voltage). Maximum Count Rate: 100 counts per second. AC models will operate on 50 or 60 Hz. Mimumum Pulse Width:Count (Control): 3 ms.; Reset: 3 ms. Available Counting Functions: Operate at preset count and release at Environmental Data preset count. Temperature Range: Storage: -20°C to +70°C. Contact Data @ 25°C Operating: -10°C to +55°C. Humidity: 85% relative humidity, non-condensing. Arrangements: 2 Form C (DPDT). Material: Silver-cadmium oxide alloy. Mechanical Data Rating: 10A @ 30VDC or 277VAC, resistive; 1/2 HP @ 250VAC; 1/3 HP @ 120VAC. Termination: 11-pin octal style plug. Expected Mechanical Life: 10 million operations. Enclosure: Beige plastic 1/16 DIN case. Expected Electrical Life: 100,000 operations, min., at rated load. Sockets: Fits either 27E123 or 27E892 (snap-on) screw terminal sockets. Weight: 4.3 oz. (122g) approximately. Initial Dielectric Strength External Control: CONTROL, RESET: Active on contact closure or solid Between Open Contacts: 1,000V rms, 60 Hz. state switch closure to RETURN, 0-1.0VDC maximum Between All Other Conductors: 1,500V rms, 60Hz. voltage level (see wiring diagrams for interface circuits. Ordering Information – Authorized distributors are more likely to stock boldface items listed below. Universal Input Model Accessories Part Number Name Description Input Voltage Part Number SSA-24C667 Mounting Clip Ratchet-fit clip slides onto CNT from behind 24-240VAC/VDC CNT-35-96 to secure CNT in panel mount applications. Fixed Input Models SSA-24C668 Protective Cover Clear, flexible cover slips snugly over bezel of Input Voltage Part Number CNT to help protect against dust and moisture. Durable cover also helps prevent inadvertant 12VDC CNT-35-26 changes of programming switch settings. 120VAC CNT-35-76 Outline Dimensions Wiring Diagrams (Bottom Views) (pins numbered clockwise from keyway) 1.88 2.83 EXTERNAL CONTROL SWITCHES** (47.8) (71.9) RESET .32 CONTROL (8.1) CONTROL (COUNT) RETURN RETURN RESET O NC N USE SAME 1.88 1.76 FOR RESET (47.8) (44.7) 111 A 1 1 1 H 111 INPUT* _ _ + + INPUT* * Note: Input polarity for DC operation. For most reliable operation on AC, connect high side .64 to “+” and low side to “–”. (16.3) ** Important: A dry circuit switch is recommended. A “dry circuit” switch is one rated to Fits 1.77 x 1.77 (45 x 45) 3.15 reliably switch currents of less than 50mA. Use of a switch rated for other Panel cutout (80.0) than dry circuit may result in failure of the time delay relay to function properly. Dimensions are shown for Dimensions are in inches over Specifications and availability www.tycoelectronics.com reference purposes only. (millimeters) unless otherwise subject to change. Technical support: 1211 specified. Refer to inside back cover. Catalog 1308242 Issued 3-03 P&B Protective Cover & Mounting Clip Dimensions SSA-24C668 SSA-24C667 Protective Cover Mounting Clip 1.99 .40 (50.5) (10.2) “A ” 2.283 1.970 (58.0) (50.0) 2.047 1.99 (52.0) (50.5) .591 (15.0) 1.654 Section "A-A" (42.0) “A 1.890 ” (48.0) Programming Switch Diagram With this setting, the relay would operate after a delay period of 214 seconds. A 214 S Function Select: Timer Mode: A = Delay On Operate E = Recycle I = Pulse B = Delay On Release F = Single Cycle J = Cumulative Delay On Operate C = Interval On G = Control On-Off Interval On D = Control-Off Interval On H = Control On-Off Delay Counter Mode: B = Divide by 10 C = Divide by 100 A & D-J = Normal Count Time/Counter Setting: 001 to 999 Time Base/Counter Mode Select: Time Base: .1S = 0.1 to 99.9 Sec. .1M = 0.1 to 99.9 Min. .1H = 0.1 to 99.9 Hrs. 10H =10 to 9990 Hrs. S = 1 to 999 Sec. M = 1 to 999 Min. H = 1 to 999 Hrs. Counter Mode: CO = Operate at Preset Count CR = Release at Preset Count Timer Function Descriptions started by momentary CONTROL input or power-on with CONTROL A . Delay On Operate Output relay turned on at end of programmed time interval which is started on. Relay stays on for equal time interval, then turns off. RESET terminates timing and turns relay off. Turning RESET off does not restart by CONTROL input or power-on with CONTROL on. Relay turned off by RESET input until next cycle is started. With CONTROL on, turning RESET timing. off restarts timing G. Control On-Off Interval On (Watch Dog Timer) B. Delay On Release Output relay turned on and programmed time interval started or restarted Output relay turned on with CONTROL input and remains on for programmed by change of CONTROL input. RESET turns relay off and stops timing. Turning RESET off does not restart timing. time interval following removal of CONTROL. During time interval after release of CONTROL, RESET turns relay off until cycle restarted with H. Control On-Off Delay reapplication of CONTROL. With CONTROL on, relay is held off while Output relay turned on at end of programmed timing interval which is RESET is activated. started or restarted by change of CONTROL input. If relay is on, turn-off C. Interval On of relay occurs at end of programmed time interval which is started or restarted by change of CONTROL input. RESET turns relay off and stops Output relay turned on for programmed time interval by CONTROL or power- on with CONTROL on. RESET turns relay off until next cycle is started, and timing. Turning RESET off does not restart timing. does not restart timing when RESET is removed. I. Pulse D. Control-Off Interval On Output relay turned on at end of programmed time interval, which is Output relay turned on for programmed time interval by turn-off of CON- started by CONTROL input, for 0.5 second duration, and continues in pulsed mode at programmed time interval with fixed 0.5 second on-time. TROL. RESET turns relay off until next cycle is started, and does not restart timing when RESET is removed. Turning CONTROL off turns relay off and stops timing. RESET turns relay off and inhibits operation. With CONTROL on, removal of RESET restarts E. Recycle timing. Output relay turned on at end of programmed time interval which is started J. Cumulative Delay On Operate by momentary CONTROL input or power-on with CONTROL on. Relay stays Output relay turned on at completion of total accumulate CONTROL input on for equal time interval, then turns off and cycle is repeated on a free- running basis until terminated by momentary RESET, turning relay off. With duration equal to programmed time. Turning CONTROL off before accumulation of programmed time results in measured time total being CONTROL on, turning RESET off restarts cycle. held until CONTROL is again turned on and total programmed time value F. Single Cycle is reached. RESET input resets time value to zero and turns relay off if Output relay turned on at end of programmed time interval which is energized. Turning RESET off restarts timing if CONTROL is on. Counter Function Descriptions CO – Operate at Preset Count – Normal Mode CR – Release at Preset Count – Normal Mode After initializing by momentary activation of RESET input, each on/off signal Initializing by momentary activation of RESET input turns relay on. Operation at COUNT (CONTROL) input increments displayed count in upcounting is similar to CO (Operate at Preset Count) except relay turns off at a preset manner from initial 000 value until preset count, set by thumbwheel count. switches, is reached and output relay turns on. Additional inputs continue to increment displayed count. Continued counting past maximum count (999) CO or CR – Divide-by-10 Mode results in a “wrap-around” effect to 000, followed by contrinued up-counting. Operation is as described previously, except count is incremented for every Activation of RESET input turns relay off and resets count to zero. 10 on/off input signals for a maximum presettable count of 9,990. CO or CR – Divide-by-100 Mode Operation is as described previously, except count is incremented for every 100 on/off input signals for a maximum presettable count of 99,900. Dimensions are shown for Dimensions are in inches over Specifications and availability www.tycoelectronics.com reference purposes only. (millimeters) unless otherwise subject to change. Technical support: 1212 specified. Refer to inside back cover.