Product Update (12/29/2025): The ASL-52 manufactured after September 2025 (SN: 20250926xxxxxx) has a voltage output from terminal #3 of 12VDC, differing from units from older batches, which have a voltage output of 9VDC.
This multifunctional relay control device is designed to provide automation solutions for a broad range of applications. It can be used as a timer, counter, frequency meter, or tachometer. It allows you to activate the relay at a specific time, a set number of counts, a specified frequency, or a predetermined rotation speed.
This device is powered by 9 ~ 30 VDC. It can be used for portable devices or automobile applications.
The timer function covers almost every application that needs a timed relay action. It can be set as a single delay, a double delay, a pulsed output, or a cumulative timer. It can display the timing in either count-up or count-down mode. The range of timing can be as short as 0.01 seconds or as long as 9999 days. The timer can be activated upon powering up, by the front keypad, or with a remote switch.
The counter and frequency meter offer an advanced signal discriminator that can remove noise-triggered false counts. It can perform multiplication and division so that a more meaningful number will be displayed. For example, if each mold injection produces four parts but the counter only receives one pulse, the user can set the counter to multiply the pulse by 4 to display the actual parts count.
For customers who use our temperature controllers, the timer can enhance the performance of their systems. One example is to cycle a circulation fan in the oven on and off for a preset time. The other example is using the alarm output of the controller to trigger the timer. When the preset temperature is reached, the alarm will start the timer. When the timer delay is reached, the timer will shut off the heater.
Specifications:
| Timer range |
0.01 s to 9999 days |
| Timer mode |
single time delay, double time delay, cumulative time delay |
| Timer trigger |
power on, front keypad, remote switch, or sensor |
| Timer accuracy |
< 10 s / day |
| Frequency counter range |
1.0 - 9999 Hz |
| Counter: Max speed |
0.1 ms. Max no. 100 million |
| Tachometer range |
60 - 9999 RPM |
| Power supply |
9 ~ 30 VDC |
| Power Consumption |
< 2 W |
| Relay output |
7 A for 240 VAC, 120 VAC, and 24 VDC (for resistive load, 1/10 of the rating for inductive load) |
| Relay life |
100,000 times |
| Operating temperature |
0 - 60°C |
| Humidity |
0 - 95% RH |
| Panel cutout |
44.5 x 44.5 mm |
| Dimensions |
48 (w) x 48 (H) x 80 (D) mm |
[PDF] ASL-52 user manual
[PDF] ASL-52 (v2) user manual (coming soon)
This product was added to our catalog on Wednesday 25 November, 2009.
