Haes TPCA027 MZAOV PSU Main PCB

Haes TPCA027 MZAOV PSU Main PCB

A power Supply Unit card for Multizone Automatically Opening Vent control panel (MZAOV).

Key Features

• 28VDC supply input, diode protected for reversal and independent short circuit
• Maximum input current, 10A; input voltage 22 to 32VDC; configurable for either one, or both, of the inputs to be used
• Inputs for two RS-485 Peripheral BUS (PBUS) circuits, not currently used; the PBUS circuits are not intended for networking
• Common alarm changeover relay contacts, max 3A at 30VDC (unfused); activate when an alarm condition exists on any zone circuit or a trigger condition exists on any external Input circuit
• 28V output, fused at 500mA, for use by external auxiliary equipment (RDUs, PSUs, etc.)
• Two 24VDC programmable and monitored sounder outputs, configurable as FARE and FWRE (Fire and Fault routing)
• Common fault signal changeover relay contacts, max 3A at 30VDC (unfused); normally energised (failsafe) contacts change-over when any fault is active on the panel or in the event of total power loss
• Connections for battery temperature sensor
• Output connections for 12Ah or 18Ah VRLA batteries charging (temperature compensated); 27.3VDC output at 20C, max. charging current 700mA or 1.2A.
• Control input from external 3-way fireman control switch, for manual control of all vents simultaneously