Nohmi PCA-2442X ALE Address Expansion Board
Address Loop Extender (PCA-2442X ALE) is a microprocessor based circuit assembly that provides an additional signal line circuit (SLC) to the Integlex Multicrest
™ S508 fire alarm control panel, limited SLC power and supervision. The S508 FACP will support a total of three PCA-2442X ALE loop extenders. The PCA-2442X ALE is mounted above the mainboard assembly inside the cabinet, A harness connects the first PCA-2442X ALE to the mainboard and subsequent PCA-2442X ALE(s) is connected to the PCA-(s) The first 2442X ALE. The PCA-2442X ALE is configurable for NFPA Class A (Style 6, 7) or Class B (Style 4). The PCA-2442X ALE only works with the S508 FACP and uses the Nohmi family of detectors and modules.
• One signal line circuit for up to 127 addressable devices
• A simple LED for status indication
• Size reduction unit
• Easy to install
| No | Item | Specifications |
| 1 | Maximum message current 24VDC | 80mA |
| 2 | Standby voltage current up to 24 VDC | 80mA |
| 3 | Applicable wire style SLC | NFPA class A (style 7), class A (style 6), class B (style 4) |
| 4 | SLC . loop maximum impedance | Blow 50Ω |
| 5 | Voltage transfer capacitance SLC | 0.5 µF |
| 6 | Working Temperature | 0°C to 49°C (32°F to 120°F) |
| 7 | Address device number on loop | 127 |
| 8 | Connected S508 | RS-485 |
| 9 | Dimension | 95mm (3.74inches) (H) × 106mm (4.17 inches) (W) × 20mm (0.79inch) (D) |
1. Installation instructions
2. wiring between PCA-2440X Main Board and PCA-2442X ALE
3. NFPA Type 4 of SLC
4. SLC style 4 . wire configuration
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