DIMENSIONS INCHES MILLIMETERS Series 427 1/16 DIN Multi-Mode Bar Graph Display Timer FEATURES  Digital Setting with 0.1% Accuracy  Unique LED Bargraph Indicates Time Cycle in 20% Increments  8 Field Selectable Modes of Operation FIELD SELECTABLE MODES OF OPERATION  Output Contacts Rated 10A at 120/240 VAC and An 8 position tamper proof mode switch allows easy selection of 30 VDC any one of eight different timing modes.  Timing Ranges: • On-Delay  Repeat Cycle 0 to 9.99, 99.9 and 999 sec., min., and hours  Signal Interval/Off-Delay  Universal Power Supply; 24-240 VAC and  Signal Off-Delay 24 VDC  Interval 2  Cycle One Shot  48mm DIN Standard Housing  Signal On-Delay/Off-Delay  11-Pin Socket Mount or Panel Mount  Signal Off-Delay (2)  Range & Mode Switches are Tamper Proof 2 when Panel-Mounted 48mm DIN HOUSING 2 The 48mm (1/16 DIN) housing is compact. The 427 is mounted  3 Separate Control Inputs: Start, Gate, Reset in an 11-pin round socket. With an optional mounting clip, the 427 can be panel mounted. PRODUCT HIGHLIGHTS Positive indication of the setpoint is shown on the front of the 427. Each digit can be changed by rotating the setting knobs. DIGITAL SETTING The decimal point and sec./min./hr. range are also clearly The 427 is set digitally by rotating each setting knob. This displayed. digital setting allows exact, accurate and repeatable timing The decimal point and sec./min./hr. select switches are located cycles. on the side of the unit, so that when panel mounted, these switches are not accessible to the operator. This tamper proof HIGH ACCURACY feature prevents unauthorized or hazardous changes to the The 427 utilizes a crystal controlled oscillator which timing range from being made. provides 0.1% timing accuracy across all rated voltages and temperatures. CYCLE PROCESS INDICATION The 427 LED bargraph indicator provides a unique and effective UNIVERSAL POWER SUPPLY method of cycle progress indication. Off before timing, the first The 427 can be powered using 24-240 VAC or 24 VDC five LED’s blink for the first 20% of the timing cycle. After the power, greatly simplifying ordering and inventory management first 20%, this LED stays on and the next LED blinks. This of replacement units. operation continues for all 5 LEDs until the timing cycle is complete. When timed out, all 5 LEDs remain on providing positive indication to the operator. 216 APPROVALS See Agency Listing on page 391. TIMERS TIMERS OPERATION WIRING Operating Power is applied to terminals (10) & (2). Depending Model: 0427A300F80XX upon the Mode of Operation selected and the wiring of the three Control terminals (START, RESET, GATE) the 427 can be started by wiring the START terminal (6) to (3). The 427 can be reset by wiring the RESET terminal (7) to (3). The timing can be temporarily stopped by wiring the GATE terminal (5) to (3). When wiring the Control terminals: (5), (6), (7), the use of high quality signal relay or switch is recommended. Do not apply power to any of these terminals or the 427 may be damaged. Keep the leads to the Control terminals as short as possible and do not route in the same conduit or wiring bundles as load carrying wires. Do not wire external loads in parallel with these Control terminals. See Modes of Operation Bottom View of Timer MODES OF OPERATION On-Delay Operation (Mode A) When operating power is applied, the time-delay begins. At the end of the time-delay, the output relay energizes and remains energized until reset by removing the operating power. Using the START and RESET control terminals: With operating power applied, timing starts at the leading edge of the start signal. At the end of the timing, the output relay energizes and remains energized until reset by the leading edge of the reset signal, or removal of operating power. Before starting your design, read the safety statement on the inside back cover of the ATC catalog. 217 Signal Interval/Off-Delay (Mode B) When operating power is applied, the preset off time begins. When the off time ends, the output relay energizes and the on time begins. When the on time ends, the relay de-energizes and a new cycle begins. The timer recycles until the operating power is removed, or momentarily enabling the reset. Signal Interval/Off-Delay (Mode C) When operating power is applied, the output relay energizes and timing starts when the start switch is opened or closed. When the time setting is reached, the output relay de-ener- gizes. The timer restarts from zero if the start switch transi- tions during the timing cycle. Signal Off-Delay 1 (Mode D) With power applied, the output relay energizes when the start switch is closed. Timing starts when the start switch is opened. At the end of the time delay, the relay de-energizes and the timer resets. Interval (Mode E) When operating power is applied, the output relay energizes and timing starts. At the end of timing, the relay de-energizes and timing stops. The reset, remove the operating power or enable the reset terminal momentarily. 218 TIMERS TIMERS Cycle One-Shot (Mode F) When operating power is applied, the timing cycle starts. When the time setting is reached the output relay energizes and remains energized. If the operating power is still applied, the timer continues timing and when the time setting is reached again, the output relay de-energizes. Reset is accomplished by removing operating power or closing the reset switch. Signal On-Delay/Off-Delay (Mode G) When operating power is applied, the timing cycle starts with the opening or closing of the start switch. A. Closing a normally open switch, the timing cycle starts and when the time setting is reached the output relay energizes. Opening the start switch, timing restarts and the relay de-energizes when the time setting is reached. B. Using a normally closed start switch, when operating power is applied, the timer begins the above timing cycle immediately Signal Off-Delay 2 (Mode H) With operating power applied, the timing cycle starts and the output relay energizes when the start switch opens. When the time setting is reached, the output relay de-energizes. Before starting your design, read the safety statement on the inside back cover of the ATC catalog. 219 TEMPERATURE RATING REPEAT ACCURACY SPECIFICATIONS -18°C to 60°C. (0 to 140°F.) +/-0.1% over all rated voltages (crystal controlled) MODEL: 427A300F80XX NOISE IMMUNITY 8 Switch selectable Modes of Operation: Showering ARC per NEMA ICS 2-230. POWER RESET TIME A - On Delay In addition, the 427 will withstand a volt- a. 0 to 20 msec power interruption; B - Repeat Cycle age surge of 4500 volts for 50 usec.with- guaranteed no reset. C - Signal Interval/Off Delay out damage. b. 20 to 65 msec; it may reset (40 msec D - Signal Off Delay 1 typical reset) E - Interval MOUNTING c. Over 65 msec guaranteed to reset F - Cycle One Shot 11-pin plug-in base; mounts in any posi- G - Signal On Delay/Off Delay tion with retaining clips. WEIGHT H - Signal Off Delay 2 Options: Surface mounting 5 oz. (140 g) DIN mounting socket CONTACT RATING Panel-mounting adapter kit CONTROL RESET TIME Rated 10 AMPS resistive at 30 VDC or Plug-on socket a. Start: 50ms 250 VAC (or less) b. Reset: 50ms 1/8 HP @ 120 VAC POWER REQUIREMENTS c. Gate: 50ms 1/4 HP @ 240 VAC Universal power supply - reverse polarity 240 VA @ 240 VAC protected 24 to 240VAC, 50/60 Hz; (+10%, -20%) LIFE: 10 million operations with no load 24VDC (+20%,-20%) 100,000 operations with: 10 AMPS at 30 VDC (or less) or AC: Inrush - 1.5 Amps 10 AMPS at 250 VAC (or less) @ 50°C Power required - 1.2 watts DC: Maximum ripple @ 100 Hz - 10% CONTACT MATERIAL Current required - 50 mA Cadmium Silver Oxide Power required - 1.2 watts “F” option - Peak inrush current= 2 Amps @ 24 VDC ORDERING CODE 427A 300 F 80 XX BASIC TYPE RANGE 300 0 to 9.99, 99.9, 999 sec., min., hrs. VOLTAGE & FREQUENCY F 24 to 240 VAC and 24 VDC ARRANGEMENT 80 8 operating modes FEATURES XX Standard plug-in, 11-pin round XK Special ACCESSORIES 0000-825-86-00: 11 Pin surface/DIN rail socket 0405-025-07-00: Hold down for above socket 0405-320-02-00: Panel mounting bracket 0314-260-07-00: 11-Pin Plug-in socket kit 0000-825-88-00: 11-Pin panel socket with rear facing terminals For prices and further information, consult factory. Before starting your design, read the safety statement on the inside back cover of the ATC catalog. 220 TIMERS