SINOTIMER TM928S Series Programmable Timer Switch User Manual

1. Introdución

The SINOTIMER TM928S series is a versatile 7-day programmable digital timer switch designed for household and industrial applications. It features a backlight LCD display, precise second-interval programming, and DIN rail mounting for easy integration into electrical systems. This manual provides detailed instructions for the safe installation, operation, and maintenance of your timer switch.

Características principais:

• 16 ON/OFF setting programs per day/week
• LCD display with backlight for clear visibility
• Wide power supply range: 85-265VAC, 50/60Hz
• Manual ON/OFF/AUTO switching modes
• Built-in rechargeable battery for program memory retention (90 days black-out)
• Time setting includes hour, minute, and second, with weekly programming
• Lock function to prevent accidental changes

Figure 1: SINOTIMER TM928S Programmable Timer Switch (Front View)

2. Especificacións

Figure 2: Approximate Dimensions of the Timer Switch

3. Información de seguridade

ADVERTENCIA: Risco de descarga eléctrica. A instalación e o mantemento só deben ser realizados por persoal cualificado.

• Desconecte sempre a alimentación antes de instalar ou realizar o mantemento do dispositivo.
• Asegúrese de que todas as conexións de cableado estean seguras e cumpran cos códigos eléctricos locais.
• Do not exceed the maximum load current specified for your model (16A or 30A).
• Manteña o dispositivo lonxe da auga e da humidade excesiva.
• Do not attempt to open or repair the device yourself, especially the TM928SBKL model with its non-replaceable internal battery.

4. Instalación

4.1 Montaxe

The SINOTIMER TM928S series timer switch is designed for 35mm DIN rail mounting. Simply clip the device onto a standard DIN rail in your electrical panel.

Figura 3: Traseira view showing DIN rail mounting mechanism

4.2 Esquemas de cableado

The wiring configuration depends on the model (16A or 30A) and whether a contactor is used for higher loads. Always ensure power is disconnected before wiring.

4.2.1 TM928SAKL (16A Model) Direct Load Wiring

For loads up to 16A, the timer can directly control the device. Connect the Line (L) and Neutral (N) to terminals 1 and 2 respectively for power supply. The load is connected between terminal 3 (NO - Normally Open) and the Neutral (N) line. Terminal 4 (NC - Normally Closed) is not used in this configuration.

Figure 4: Wiring for TM928SAKL (16A) Direct Load

4.2.2 TM928SAKL (16A Model) with Contactor

For inductive loads or loads exceeding 16A, a contactor must be used. The timer controls the contactor coil, which in turn switches the main load circuit. Connect the timer's output (NO terminal 3) to one side of the contactor coil, and the other side of the coil to Neutral (N). The main power for the load passes through the contactor's power contacts.

Figure 5: Wiring for TM928SAKL (16A) with Contactor

4.2.3 TM928SBKL (30A Model) Direct Load Wiring

For loads up to 30A, the TM928SBKL model can directly control the device. Connect the Line (L) and Neutral (N) to terminals 1 and 2 respectively for power supply. The load is connected between terminal 3 (NO - Normally Open) and the Neutral (N) line. Terminal 4 (NC - Normally Closed) is not used in this configuration.

Figure 6: Wiring for TM928SBKL (30A) Direct Load

4.2.4 TM928SBKL (30A Model) with Contactor

For inductive loads or loads exceeding 30A, a contactor must be used. The timer controls the contactor coil, which in turn switches the main load circuit. Connect the timer's output (NO terminal 3) to one side of the contactor coil, and the other side of the coil to Neutral (N). The main power for the load passes through the contactor's power contacts.

Figure 7: Wiring for TM928SBKL (30A) with Contactor

5. Funcionamento

The timer switch has a clear LCD display and several buttons for configuration: MENU, Up Arrow, Down Arrow, OK, and Res (Reset).

Figure 8: Timer Display and Control Buttons

5.1 Unlocking the Device

If the display shows "LOCK ON", the device is locked to prevent accidental changes. To unlock:

• Manteña premido o MENÚ botón durante aproximadamente 3 segundos.
• The "LOCK ON" indicator will disappear, and the device will be ready for programming.

5.2 Axuste da hora actual

After unlocking, you can set the current time:

• Preme o OK botón para entrar no modo de configuración da hora.
• Usa o Frecha cara arriba e Frecha abaixo buttons to adjust the hour, minute, and day of the week.
• Preme OK de novo para confirmar cada axuste e pasar ao seguinte.

5.3 Programación de ciclos de acendido/apagado

The timer supports up to 16 ON/OFF programs per day/week. To set a program:

• Preme o MENÚ button repeatedly until you see "1 ON" (for the first ON program).
• Usa o Frecha cara arriba e Frecha abaixo buttons to set the desired time (hour, minute, second) and day(s) of the week for this ON event.
• Preme MENÚ again to move to "1 OFF" (for the first OFF program).
• Set the desired time and day(s) for this OFF event.
• Repeat for up to 16 ON/OFF pairs.
• Para saír do modo de programación, prema OK botón.

5.4 Manual Override (ON/OFF/AUTO)

You can manually switch the timer's output state or set it to automatic mode:

• Preme o MENÚ botón e o Frecha cara arriba button simultaneously to cycle through the working statuses: ON (sempre aceso), EN AUTO (currently on, will follow programs), DESACTIVADO (always off), OFF AUTO (currently off, will follow programs).
• Select the desired mode. For programmed operation, ensure it is set to either "ON AUTO" or "OFF AUTO".

5.5 Reinicio do dispositivo

To clear all settings and return the timer to its factory default state:

• Locate the small Res (Reset) button.
• Usa un obxecto puntiagudo (como a punta dun bolígrafo) para premer Res button. The display will reset.

6. Mantemento

6.1 Información da batería

• TM928SAKL (16A Model): This model includes a replaceable CR2032 battery. If the display becomes dim or the timer loses settings during a power outage, the battery may need replacement. To replace, carefully open the battery compartment on the back of the unit and insert a new CR2032 battery, ensuring correct polarity.
• TM928SBKL (30A Model): This model has a built-in, non-replaceable internal battery. It is designed for long-term use without battery maintenance. Do not attempt to open the unit to replace the battery.

Figure 9: TM928SAKL (16A) with Replaceable CR2032 Battery

Figure 10: TM928SBKL (30A) with Non-Replaceable Internal Battery

6.2 Limpeza

Wipe the exterior of the timer switch with a soft, dry cloth. Do not use abrasive cleaners or solvents.

7 Solución de problemas

8. Consellos de usuario

• Facilidade de uso: Many users find this timer very easy to mount and program. Take your time to understand the programming steps, and you'll find it straightforward.
• Verificar a configuración: After programming, always double-check your ON/OFF times and selected days to ensure they match your intended schedule.
• Battery Check (16A Model): If you have the 16A model, consider having a spare CR2032 battery on hand, especially if the timer is in an area prone to power fluctuations.

9. Garantía e soporte

For warranty information, technical support, or service inquiries, please refer to the documentation provided at the time of purchase or contact your vendor. Keep your purchase receipt as proof of purchase.