Autonics LE7M-2 Series W 72 × H 72 mm LCD Week Year Digital Timers Instruction Manual

: June 10, 2024
: Autonics

Autonics LE7M-2 Series W 72 × H 72 mm LCD Week Year Digital Timers

Autonics LE7M-2 Series W 72 × H 72 mm LCD Week Year Digital
Timers

Thank you for choosing our Autonics product.
Read and understand the instruction manual and manual thoroughly before using the product.
For your safety, read and follow the below safety considerations before using.
For your safety, read and follow the considerations written in the instruction manual, other manuals and Autonics website.
Keep this instruction manual in a place where you can find easily.
The specifications, dimensions, etc. are subject to change without notice for product improvement. Some models may be discontinued without notice.
Follow Autonics website for the latest information.

Safety Considerations

Observe all ‘Safety Considerations’ for safe and proper operation to avoid hazards.
Symbol indicates caution due to special circumstances in which hazards may occur.

Warning: Failure to follow instructions may result in serious injury or death.

Fail-safe device must be installed when using the unit with machinery that may cause serious injury or substantial economic loss.(e.g. nuclear power control, medical equipment, ships, vehicles, railways, aircraft, combustion apparatus, safety equipment, crime/disaster prevention devices, etc.)
Failure to follow this instruction may result in personal injury, economic loss or fire.
Do not use the unit in the place where flammable/explosive/corrosive gas, high humidity, direct sunlight, radiant heat, vibration, impact or salinity may be present.
Failure to follow this instruction may result in explosion or fire.
Install on a device panel or DIN rail to use.
Failure to follow this instruction may result in fire or electric shock.
Do not connect, repair, or inspect the unit while connected to a power source.
Failure to follow this instruction may result in fire or electric shock.
Check ‘Connections’ before wiring.
Failure to follow this instruction may result in fire.
Do not disassemble or modify the unit.
Failure to follow this instruction may result in fire or electric shock.
Since Lithium battery is embedded in the product, do not disassemble or burn the unit.
Failure to follow this instruction may result in fire.
Please contact to us for battery replacement.

Caution: Failure to follow instructions may result in injury or product damage.

When connecting power/external input and relay output, use AWG 20 (0.50 mm2 ) cable or over, and tighten the terminal screw with a tightening torque of 0.74 to 0.90 N m.
Failure to follow this instruction may result in fire or malfunction due to contact failure.
Use the unit within the rated specifications.
Failure to follow this instruction may result in fire or product damage.
Use a dry cloth to clean the unit, and do not use water or organic solvent.
Failure to follow this instruction may result in fire or electric shock.
Keep the product away from metal chip, dust, and wire residue which flow into the unit.
Failure to follow this instruction may result in fire or product damage.

Cautions during Use

Follow instructions in ‘Cautions during Use’.
Otherwise, it may cause unexpected accidents.
When supplying or turning off the power, use a switch or etc. to avoid chattering.
Install a power switch or circuit breaker in the easily accessible place for supplying or disconnecting the power.
Keep away from high voltage lines or power lines to prevent inductive noise. In case installing power line and input signal line closely, use line filter or varistor at power line and shielded wire at input signal line.
Do not use near the equipment which generates strong magnetic force or high frequency noise.
In case of controlling a heater, be sure to use a thermostatic switch at the load circuit.
This unit may be used in the following environments.
- Indoors (in the environment condition rated in ‘Specifications’)
- Altitude max. 2,000 m
- Pollution degree 2
- Installation category II

Cautions for Lithium Battery

Follow these instructions for using the product safely.

Do not charge, short, disassemble, subject it to shock, heat.
Check the polarity.
Do not solder on a battery directly.
Insulate a battery with tape to dispose.
Do not store this unit in the place with the direct sunlight, high temperature and humidity.

Ordering Information

This is only for reference, the actual product does not support all combinations.
For selecting the specified model, follow the Autonics website.

LE7M – 2 ❶

❶ Mounting type

B: Flush mount
D: Surface mount

Product Components

Model	LE7M-2B	LE7M-2D
Product components	Product, instruction manual
Bracket	× 2	–
Base plate	–	× 1
Bolt	–	× 2 (for the base plate)

Sold Separately

Bracket (model name: 2BD00099AB)
Base plate (model name: DRW180858AA)

Specifications

Model	LE7M-2B	LE7M-2D
Number of steps for the program	64 steps for weekly, 32

steps for yearly
Operation mode| Weekly: ON/OFF, pulse, cycle operation Yearly: ON/OFF, pulse operation
Temperature error| ≤ (±0.01%±0.05 sec), at a ratio by the setting time
Cyclic error| ±15 sec/month (25 ℃, ±4 sec/1 week)
Memory retention| ≥ 5 years (25 ℃)
External input| Open or short circuit by a contact device (switch or relay)
Mounting type| Flush mount| Surface or DIN rail mount
Approval| |
Unit weight (packaged)| ≈ 207 g (≈ 337 g)| ≈ 208 g (≈ 361 g)
Power supply| 100 – 240 VAC~ ±10%, 50/60 Hz
---|---
Power consumption| ≤ 4.2 VA
Control output| Relay
Contact type| SPDT (1c)
Contact capacity| Resistive load: 250 VACᜠ 15 A
Number of circuits| Independent 2 circuits (1c × 2)
Mechanical life expectancy| ≥ 10,000,000 operations (switching capacity: 30 times/min)
Electrical life expectancy| ≥ 50,000 operations (switching capacity: 20 times/min, resistive load: 250 VAC ~ 15 A)
Insulation resistive| ≥ 100 MΩ (500 VDC⎓ megger)
Noise immunity| ± 2 kV square-wave noise by noise simulator (pulse width 1 ㎲)
Dielectric strength| Between primary terminal and case : 3,000 VAC~ at 50/60 Hz for 1 min
Vibration| 0.75 mm double amplitude at frequency of 10 to 55 Hz (for 1 min) in each X, Y, Z direction for 2 hours
Vibration (malfunction)| 0.5 mm double amplitude at frequency of 10 to 55 Hz (for 1 min) in each X, Y, Z direction for 10 min
Shock| 300 m/s2 (≈ 30 G) in each X, Y, Z direction for 3 times
Shock (malfunction)| 100 m/s2 (≈ 10 G) in each X, Y, Z direction for 3 times
Ambient temperature| -10 to 55 ℃, storage: -25 to 65 ℃ (no freezing or condensation)
Ambient humidity| 35 to 85%RH, storage: 35 to 85%RH (no freezing or condensation)

Unit Descriptions

LE7M-2B: flush mounting installation
LE7M-2D: surface mounting installation
Button layout
01. [CHECK] key
02. [MODE] key
03. [▶] [▼] [▲] key +1h: summer time (DST)
04. [SET] key
05. Switch for output settings
ON: keeps the output in ON state
AUTO: controls the state of output depending on the settings
OFF: keeps the output in OFF state
Screen layout
01. Main display part
02. Sub-display part
03. Day indicator and day display
04. Current time setting indicator
05. Summer time (DST) indicator
06. AM/PM indicator
It turns ON depending on the selected
12/24h display mode
07. Season indicator
08. Program indicator
09. Setting state display
ON time/day:
ON time width:
Pulse width:
OFF time/day:
OFF time width:
10. Bank group indicator
11. Total time/count alarm indicator
12. Year indicator
13. Display for the number of remaining steps
14. Operation mode indicator
15. Retention (return) input indicator
16. Output operation (OUT 1, OUT 2) indicator
17. Indicator for the unit of pulse width

Connections

Caution: Refer to the ‘specifications’ for checking the power supply and control output.

LE7M-2B
• Rear part
LE7M-2D
• Front part

External input

Set the external input mode on the Function settings (group 2). For more information, refer to the Manual.
The external input function is operated depending on the state of the no. 9 and 10 input terminals.
When using a switch or relay: Be sure to use a highly reliable contact device that is enough to flow and break 0.1 mA at 5 VDC⎓.
| Open-circuit| Short-circuit
---|---|---
Total time| –| Input
Total count| –| Input
Bank group| Bank A| Bank B
Retention (return) input 01)| –| Input
Time synchronization| –| Input

In RUN mode, press [SET] key over 3 sec to return the mode.

Connections of Load

Caution: Be sure to connect a surge absorber (S/A) to both ends of the load to prevent damage or malfunction of this unit when controlling non resistive load (e.g., magnetic switch, etc).
Failure to follow this instruction may result in the product damage or malfunction.

Controlling the load directly
Controlling the load by using a magnetic switch
• Single phase

• 3-phase

Dimensions

Unit: mm, For the detailed drawings, follow the Autonics website.
The bolt size of terminal blocks: M3.5

LE7M-2B

Dimensions

Flush mounting installation
Panel cut-out
Panel thickness: ≤ 3.7 mm

LE7M-2D

LE7M-2D

Panel hole cut-out
DIN rail mounting installation: Base plate
Surface mounting installation
Use the provided bolts to mount the base plate for the DIN rail installation.

Mode Setting

All outputs (OUT 1, OUT 2) are to be OFF when entering the setting mode on RUN mode. If the timer is turned OFF and ON again during the settings, applying previous settings.
The timer operates depending on the program settings at next ON time.
The timer operates depending on the program settings at next OFF time.

Operation and Function Settings

Some parameters are activated or deactivated depending on the other parameters.
For more information, refer to the Manual.

Program settings (group 1)

Parameters	Display part	Main display	Sub- display
Weekly program of program 1	PROG P1
Weekly program of program 2	PROG P2
Yearly program of program 1	PROG P1, YEAR
Yearly program of program 2	PROG P2, YEAR
Clear all weekly program of program 1	PROG P1
Clear all weekly program of program 2	PROG P2
Clear all yearly program of program 1	PROG P1, YEAR
Clear all yearly program of program 2	PROG P2, YEAR
Change weekly day
Yearly holiday operation	YEAR

Function settings (group 2)

Parameters	Display part	Main display	Sub- display
Current time

Check/edit/clear the weekly program

Parameters	Display part	Main display	Sub- display
Check the record of weekly program in the program 1
Edit the record of settings
Clear the record of settings
Check the record of weekly program in the program 2
Edit the record of settings
Clear the record of settings

Check/edit/clear the yearly program

Parameters	Display part	Main display	Sub- display
Check the record of yearly program in the program 1	YEAR
Edit the record of settings	YEAR
Clear the record of settings	YEAR
Check the record of yearly program in the program 2	YEAR
Edit the record of settings	YEAR
Clear the record of settings	YEAR