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The ALM-04-MRTU module features RS-485 connection and support Modbus RTU protocol. The controller makes an easy way to incorporate RS-485 connectivity into monitoring and control systems which makes perfect integration to monitoring in SCADA software and HMI.
ALM-04-MRTU includes 4 channels Isolated DI, with 8 alarm modes, 1 channel Relay output & 1 Audio Line out. MP3 audio format (44.1kHz/128kbit/s is preferred), all files & config are stored in Micro SD (T-Flash).
| EMS Protection | |
|---|---|
| EFT (IEC 61000-4-4) | ±4 kV for Power |
| ESD (IEC 61000-4-2) |
±4 kV Contact for Each Terminal ±8 kV Air for Random Point |
| LED Indicators | |
|---|---|
| Status |
1 x System status 1 x Alarm status |
| Digital Input/Counter | |
|---|---|
| Channels | 4 |
| Type | Dry Contact |
| Dry Contact, ON Voltage Level | Close to GND |
| Dry Contact, OFF Voltage Level | Open |
| Isolation | 3750 VDC |
| Relay Output | |
|---|---|
| Channels | 1 |
| Type | Form A |
| Contact Rating | DC 50 V/100 mA |
| COM Ports | |
|---|---|
| Ports | 1 x RS-485 |
| Baud Rate | 300 ~ 115200 bps |
| Data Format |
(N, 8, 1), (N, 8, 2), (E, 8, 1), (O, 8, 1) N, 8, 1 |
| Protocol | Modbus/RTU |
| Audio | |
|---|---|
| Sampling Frequency | Rate: 24/44.1 (prefer) / 48 KHz |
| Line out Impedance | 1 KΩ |
| Audio Output | 3 W (Max.) |
| Audio Startup Time | < 150 ms |
| Bit Rate | 32 64 96 128 (prefer) 160 192 kbit/s |
| Audio File Format | MPEG1-Audio Layer Ⅲ (MP3) |
| Number of File | 64 (Max.) |
| Volume Control | Digital Volume Control |
| Sound Pressure Level | 99 dB @ 1 KHz/1 meter |
| Storage | |
|---|---|
| File Transfer | PC Editor Utility, Copy to Micro SD |
| File System | Fat16/32 |
| Type | Micro SD (T-Flash) up to 32GB, bundle 4GB |
| Power | |
|---|---|
| Reverse Polarity Protection | Yes |
| Input Range | +9 VDC ~ +28 VDC |
| Consumption | 0.48 W Standby |
| Mechanical | |
|---|---|
| Dimensions (mm) | 72 x 72 x 22 (W x L x H) |
| Installation |
Panel Mount Wall Mount DIN-Rail |
| Environmental | |
|---|---|
| Operating Temperature | -20 ~ +75°C |
| Storage Temperature | -30 ~ +80°C |
| Humidity | 10 ~ 95% RH, Non-condensing |
The ALM-04-MRTU module features RS-485 connection and support Modbus RTU protocol. The controller makes an easy way to incorporate RS-485 connectivity into monitoring and control systems which makes perfect integration to monitoring in SCADA software and HMI.
ALM-04-MRTU includes 4 channels Isolated DI, with 8 alarm modes, 1 channel Relay output & 1 Audio Line out. MP3 audio format (44.1kHz/128kbit/s is preferred), all files & config are stored in Micro SD (T-Flash).
| EMS Protection | |
|---|---|
| EFT (IEC 61000-4-4) | ±4 kV for Power |
| ESD (IEC 61000-4-2) |
±4 kV Contact for Each Terminal ±8 kV Air for Random Point |
| LED Indicators | |
|---|---|
| Status |
1 x System status 1 x Alarm status |
| Digital Input/Counter | |
|---|---|
| Channels | 4 |
| Type | Dry Contact |
| Dry Contact, ON Voltage Level | Close to GND |
| Dry Contact, OFF Voltage Level | Open |
| Isolation | 3750 VDC |
| Relay Output | |
|---|---|
| Channels | 1 |
| Type | Form A |
| Contact Rating | DC 50 V/100 mA |
| COM Ports | |
|---|---|
| Ports | 1 x RS-485 |
| Baud Rate | 300 ~ 115200 bps |
| Data Format |
(N, 8, 1), (N, 8, 2), (E, 8, 1), (O, 8, 1) N, 8, 1 |
| Protocol | Modbus/RTU |
| Audio | |
|---|---|
| Sampling Frequency | Rate: 24/44.1 (prefer) / 48 KHz |
| Line out Impedance | 1 KΩ |
| Audio Output | 3 W (Max.) |
| Audio Startup Time | < 150 ms |
| Bit Rate | 32 64 96 128 (prefer) 160 192 kbit/s |
| Audio File Format | MPEG1-Audio Layer Ⅲ (MP3) |
| Number of File | 64 (Max.) |
| Volume Control | Digital Volume Control |
| Sound Pressure Level | 99 dB @ 1 KHz/1 meter |
| Storage | |
|---|---|
| File Transfer | PC Editor Utility, Copy to Micro SD |
| File System | Fat16/32 |
| Type | Micro SD (T-Flash) up to 32GB, bundle 4GB |
| Power | |
|---|---|
| Reverse Polarity Protection | Yes |
| Input Range | +9 VDC ~ +28 VDC |
| Consumption | 0.48 W Standby |
| Mechanical | |
|---|---|
| Dimensions (mm) | 72 x 72 x 22 (W x L x H) |
| Installation |
Panel Mount Wall Mount DIN-Rail |
| Environmental | |
|---|---|
| Operating Temperature | -20 ~ +75°C |
| Storage Temperature | -30 ~ +80°C |
| Humidity | 10 ~ 95% RH, Non-condensing |
