LH24 Hour Meters DIN HALF SIZE LCD DISPLAY HOUR METER * Large 7-digit LCD display value reading * Unnecessary "0"s are eliminated from the upper digits of elapsed value for easy reading * Wide range of measurement: 0 to 3999 days 23.9 hours (exclusive for flush mounting type) 0 to 99999.99 hours 0 to 9999 hours 59.9 minutes * Two mounting types available LH24-F: Flush mounting type LH24-C: PC board mounting type PRODUCT TYPE 1) Non-voltage input type Part Number Types LH24-F Flush mounting types LH24-C PC board mounting types with manual reset without manual reset LH24-F-DH LH24-F-DH-N LH24-F-H LH24-F-H-N LH24-F-HM LH24-F-HM-N LH24-C-H -- LH24-C-HM -- Rated operating voltage Max. current consumption Built-in battery (Battery life: 10 years) -- Counting range Input 0 to 3999 days 23.9 hours 0 to 99999.99 hours 0 to 9999 hours 59.9 min 3 V DC (Uses manganese dioxide lithium battery) 20 A (When resetting: 20 A) Rated operating voltage Maximum current consumption Non-voltage input 0 to 99999.99 hours 0 to 9999 hours 59.9 min 2) Voltage input type Part Number Types LH24-F Flush mounting types Input Counting range with manual reset without manual reset LH24-F-DH-AL LH24-F-DH-AL-N 0 to 3999 days 23.9 hours LH24-F-H-AL LH24-F-H-AL-N 0 to 99999.99 hours 100 to 120 V AC/DC (signal reset is controlled by non-voltage input) 0 to 9999 hours 59.9 min LH24-F-HM-AL LH24-F-HM-AL-N LH24-F-DH-AH LH24-F-DH-AH-N LH24-F-H-AH LH24-F-H-AH-N LH24-F-HM-AH LH24-F-HM-AH-N 0 to 9999 hours 59.9 min LH24-F-DH-DL LH24-F-DH-DL-N 0 to 3999 days 23.9 hours LH24-F-H-DL LH24-F-H-DL-N LH24-F-HM-DL LH24-F-HM-DL-N Built-in battery (Battery life: 6 years) 0 to 3999 days 23.9 hours -- 200 to 240 V AC/DC (signal reset is controlled by non-voltage input) 0 to 99999.99 hours Built-in battery (Battery life: 10 years) 4.5 to 30 V DC 0 to 99999.99 hours 0 to 9999 hours 59.9 min SPECIFICATIONS Input signals Non-voltage input type Flush mounting type Minimum operating signal width Voltage input type PC board mounting type AC/DC input type 40 ms (Maximum 25 ms deviation) ON: Operation signal Input method DC input type Non-voltage input: Contact/Open collector 100 to 120 V AC/DC 200 to 240 V AC/DC OFF: 0 to 2 V AC/DC ON: 4.5 to 30 V DC OFF: 0 to 2 V DC Input impedance Maximum: 1 k when short-circuited Minimum: 100 k when open-circuited 7.5 k Residual voltage 0.5 V -- Min. signal reset width 20 ms Input method 500 ms Non-voltage input: Contact/Open collector Signal reset ON: 4.5 to 30 V DC OFF: 0 to 2 V DC Maximum: 1 k when short-circuited Minimum: 100 k when open-circuited Input impedance Residual voltage Manual reset minimum input width 20 ms 7.5 k 0.5 V 20 ms 500 ms -- 20 ms 83 Characteristics Non-voltage input type Type Voltage input type LH24-F Flush mounting type LC24-C PC board mounting type Built-in battery 3 V DC (manganese dioxide lithium battery) 10 years -- Rated operating voltage Battery life Vibration resistance DC input type Built-in battery 6 years 10 years 10 G (4 times on 3 axes) Functional Shock resistance AC/DC input type Destructive 30 G (5 times on 3 axes) Functional 10 to 55 Hz: 1 cycle/min double amplitude of 0.3 mm (10 minutes on 3 axes) Destructive 10 to 55 Hz: 1 cycle/min double amplitude of 0.75 mm (1 hour on 3 axes) Ambient temperature -10 to +55C (+14 to 131F) Storage temperature -25 to +65C (+13 to 149F) Ambient humidity 35 to 85% RH Counting direction Addition (UP) mm (inch) DIMENSIONS LH24-F, flush mounting type (Common for non-voltage input type and voltage input type) 44.5 1.752 M3.5 self-up terminal screw Reset push-key switch* HOURMETER 38.9 1.531 Panel cutout dimensions LH24 24 .945 22.2 +0 0.3 .874+0.012 22 .866 RESET 4.5 48 1.890 .177 *Without reset push key switch is also available 28.8 1.134 10.1 .398 45+0 0.6 1.772+0.024 Panel thickness: 1-4.5 mm WIRING DIAGRAM 1) Non-voltage input type 2) Voltage input type * AC/DC voltage input Contact input (1) Reset terminal (contact input) Counting input Reset input 1 3 2 4 Counting input (2) Reset terminal (open collector input) Counting input Reset input 1 3 2 4 or Reset input 1 3 2 4 or 0V * Timing input terminals ( 1 , 2 ) and reset input terminals ( 3 , 4 ) are insulated internally. Open collector input Counting input Reset input 1 0V * DC voltage input (1) Contact input 2 Counting input +V Reset input +V 1 3 +V 0V 2 4 0V 0V 4 Note: 2 (2) Open collector input Counting input 3 4 are connected internally. * Terminal 2 0V 3.3 .130 33.02 1.300 HOURMETER LH24 2.54 .100 15.24 .600 RESET Reset push-key switch 42.2 1.661 Contact input 26 Open collector input 28 Signal input Reset input 14 12 3 1 15 17 26 28 14 12 3 1 Signal input 4.6 .181 Reset input Note: 15 3 V DC lithium battery 84 0V 3 V DC lithium battery 1 3 , 12 17 , and 26 are connected internally. 1.9 .075 15.24 .600 1.9 .075 0.3 .012 WIRING DIAGRAM 17 4 Main body's 8-0.8 dia. 2.54 occupied section 8-.031 dia. .100 19 .748 15 2 +V PC board pattern (Bottom view) 5.08 .200 Dip terminal x8 0.5 .020 17.1 .673 3 (Voltage signal is recognized when the transistor is switched to OFF.) 4 are connected internally. LH24-C, PC board mounting type 5.08 .200 0.6 .024 Reset input 1 14 28 4.6 5.08 5.08 .200 .200 .181 33.02 1.300 Compatible 28-pin dip terminal OPERATION EXPLANATION Signal input Reset input Full scale PC board mounting type Elapsed time CAUTIONS <Non-voltage input type> 1. Since the current from the signal input and reset input terminals [1-3 (flush mounting type), %-i (PC board mounting type)] is small, use relays and switches which have high-reliability contact performance. 2. When input signals are triggered through the transistor's open collector, use a small signal transistor with an ICBO less than 1 A, being sure to trigger them with no voltage across the collector. 3. When connecting the signal input and reset input wires, do not run them parallel to high-voltage or power cables and avoid using the same conduit. Use shielded wires or metallic conduits which are as short as possible. If the floating capacitance of the wires exceeds 500 pF (approx. 10 m for parallel wires of 2 mm2), it will cause malfunctions. 4. Lithium batteries are built in the flush mounting types. Never throw them into a fire. Do not dispose of them in trash intended to be incinerated. *PC board mounting type-- 1. After connecting the external power, be sure to reset it to make sure that "0" appears on the display. 2. Battery life is calculated as follows: t=A I 1) Time is counted while the signal input is ON. The decimal point on the front panel LCD flashes during counting operation. 2) When the elapsed (measuring) time is fullscale, the display returns to "0" and measurement starts from "0" again. 3) While the reset input is ON, the signal time is not counted and the display is "0". In the case of the PC board mounting type, while the reset input is ON, the display does not change. However, when the reset input becomes OFF, the display will change to "0". <Voltage input type> * AC/DC Voltage input type 1. Apply voltage to the signal input terminal. Do not apply voltage to the reset input terminal. When voltage exceeding the range of the rated input voltage is applied to the signal input terminal, or if voltage is applied to the reset terminal, it may cause break-down of internal elements. 2. Since the current from the reset input terminal is small, use relays and switches which have high-reliability contact performance. 3. When reset is triggered through the transistor's open collector, use a small signal transistor with an ICBO less than 1 A, being sure to trigger it with no voltage across the collector. * Common 1. When connecting the signal input wires [1-2] and reset input wires [3-4], do not run them in parallel with high-voltage or power cables. Avoid running signal or reset wires in a power conduit. Use shielded wires or metal conduits which are as short as possible. If the floating capacitance of these wires exceeds 500 pF (approximately 10 m for parallel wires of 2 mm2), it will cause malfunctions. 2. Lithium batteries are built in. Never throw them into a fire. Do not dispose of them in trash intended to be incinerated. 4. For external reset, make a temporary short-circuit between the rear reset terminals [3-4]. * DC voltage input type 1.When more than 30 V DC is applied to the signal or reset input terminals, it may cause breakdown of internal elements. 2. For external reset, voltage is applied between the rear reset terminals [3-4] to the H level (4.5 to 30 V DC). In this case, connect (-) to terminal 4 and (+) to terminal 3]. Since they are polarized, they will not operate with reverse polarity. t: Battery life (h) I: Consumption current (mA) A: Battery capacity when the operating voltage becomes minimum. 3. Hand soldering: Soldering iron Iron tip temperature Soldering time 30 W to 60 W Approx. 300C (572F) Less than approx. 3 seconds 85