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Astra-MA

Hardwired zone extender for signaling line

Astra-MA (further Astra-MA) is designed to receive notifications via two programmable alarm loops (AL) from non-addressable devices with a “dry contact” output and to transmit notifications via Signaling Line Circuit (SLC) through Astra-A RPA (RPA) into Astra-812 Pro or Astra-8945 Pro (version 5_0 and above) Control Panels.

Addressable Mark Astra-MA (further Astra-MA) is designed to receive notifications via two programmable alarm loops (AL) from non-addressable devices with a “dry contact” output and to transmit notifications via Signaling Line Circuit (SLC) through Astra-A RPA (RPA) into Astra-812 Pro or Astra-8945 Pro (version 5_0 and above) Control Panels.

• Astra-MA does not provide connection of detectors with loop power supply.
• Astra-MA provides programming of AL from the PKM Astra Pro.
• Astra-MA provides monitoring of the operability of a fire-type AL for open and short circuit.
• Astra-MA is powered from the RPA through the SLC power circuit.

Features

  • 4-wire connection;
  • powering from Astra-A RPA (24 V DC);
  • testing by laser pointer Astra-942.
Name Description
Supply voltage 7.5 to 27.6 V
Maximum current consumption 0.5 mA
Maximum length SLC interface 1000 m
AL Parameters (terminals +Z1-,+Z2-):  
Short circuit current 1 mA
AL wire resistance 50 Ohm
AL integration time 70/300/500 msec
Overall dimensions 87x54x28 mm
Operating conditions  
Temperature from -30 to +55 °С
Relative air humidity up to 93% at +40°С (without moisture condensation)