MPC-6000 / MPC-7000 / RND-2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
8
RND-2 SYSTEM DESCRIPTION
The RND-2 is a Remote Network Display designed to connect to a Faraday MPC-NET2
Network. It features advanced programming and memory capability. Its base configuration
includes a power supply, serial interface circuit, four status relays and a programming port.
In a system with multiple panels connected via the MPC-NET2, the RND is used to
Acknowledge, Silence and Reset the total system.
The RND-2 Network annunciator mounts in a 22" x 18" backbox with overall cover size of
22-9/32" x 18-3/8". Operating controls and indicators are mounted on the inside hinged plate.
An 80 (20 x 4) – alphanumeric character LCD provides specific indications for addressable
devices while LEDs indicate general panel status.
Semi-flush mounting kits are available for the enclosure.
The main board mounts in the rear of the enclosure. The power supply is physically contiguous
with the main board. The RND-2 main board (MPC6-MB or MPC6-MB2) provides the
connections for external field wiring. Optional boards mount on the main board and the
network interface card mounts on the rear of the enclosure.
The display board mounts on the inner-hinged plate.
All normal operation is controlled via a membrane keypad. Displays are provided by an 80-
character, alphanumeric, backlit LCD and by discrete LED indicators for major control unit
functions.
The 80-character LCD is used to display event data, including alarms and troubles,
identification of network links or devices and presentation of history. The display is controlled
by a set of four push-button switches commanding the control processor. A back light is
included in the display to assure visibility in low light, but to conserve power it is only activated
during a reported event or on operation of a display control switch.
Individual LEDs on the panel are provided to indicate SYSTEM ALARM, PREALARM,
SUPERVISORY, ALARM SILENCED, SYSTEM TROUBLE and AC POWER ON. Direct push-
button controls are provided for ALARM SILENCE, ACKNOWLEDGE, MENU and SYSTEM
RESET.
Power Supply
A 24V (nominal) power supply provides all operating power to the control unit for both standby
and alarm conditions. Sufficient battery charging capability is available to charge 38 AH sealed
lead-acid batteries within code requirements for up to 60 hour quiescent plus 5 minutes alarm.
The cabinet will hold batteries only up to 12 AH. The back-up battery is 24V, maintained by
floating on the power supply. The battery will be automatically disconnected at low battery
voltage to prevent deep discharge.
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