ALM-CH30 is a 30-channel fault annunciator with dimensions of 144x144mm panel mounting, specially designed for applications in energy and automation systems. Its optically isolated digital input channels are equipped with noise suppression filters, ensuring stable and reliable operation of the device even in environments with high electrical noise.
The module is equipped with 3 relay outputs for fault alarm output, buzzer control and internal equipment fault alarm respectively. The device adopts ultra-high brightness red LED indicators and integrates an internal buzzer to provide audible and visual alarm indications. the alarm can be muted, reset, tested and other operations via button control. ALM-CH30 supports the RS485/MODBUS-RTU communication protocol.
ALM-CH30 is a 30-channel fault annunciator with dimensions of 144x144mm panel mounting, specially designed for applications in energy and automation systems. Its optically isolated digital input channels are equipped with noise suppression filters, ensuring stable and reliable operation of the device even in environments with high electrical noise.
The module is equipped with 3 relay outputs for fault alarm output, buzzer control and internal equipment fault alarm respectively. The device adopts ultra-high brightness red LED indicators and integrates an internal buzzer to provide audible and visual alarm indications. the alarm can be muted, reset, tested and other operations via button control. ALM-CH30 supports the RS485/MODBUS-RTU communication protocol.
| Parameter | Value |
| Operating voltage | 85-265VAC/DC (±10~15%), optional 24VDC |
| Rated power | ≤8W |
| Fault signal inputs | 30 channels,
Active dry contact with 15Vdc feed, no need extra power supply. |
| Response time | ≤100ms |
| Flashing frequency | >1Hz |
| Relay outputs | 3 channels
Load capacity: 5A@250VAC, 0.5A@110VDC, 0.3A@220VDC |
| Panel protection level | Front: IP54; Rear: IP20 |
| Communication | RS485 Modbus RTU |
| Indication method | LED indicator or text panel |
| Insulation performance | 2.5 kV AC RMS 1 minute, between input / output / case / power supply.
2 kV AC RMS 1 minute, between input / power supply/ communication. |
| Operating environment | Temperature: -20°C ~+60°C; Humidity: Annual avg. ≤75%, max ≤93% |
| Wiring terminal | 0.2…2.5mm² |
| Working cycle | 100% |
| Installation method | Panel mount |
| Dimension | Frame size 144×144 mm; |
