Features
- A user programmable signaling and control system utilizing 4 conductors for both signals and communications
- Up to 25 intrinsically safe loudspeaker amplifiers
- Non-handed self identifying keys
- Up to 127 individually monitored and identified unit positions
- Remote telemetry RS232/485 interface
- Applicable to all types of conveyors and rope haulages
- USA
- MSHA IA-18453

CLOIS 3000 is a flexible signaling and control system for conveyors, haulages and other plant.

The system console comprises an intrinsically safe enclosure which houses the microprocessor controlled signaling circuitry and a telemetry interface. A Power supply and Pilot relays are housed in a separate flp or XP enclosure.

In addition to the console a system can include remote amplifiers (BMAs), and various types of lock-out and signal keys as shown in the block diagram on the reverse of this data sheet. A Tail End Unit terminates the system cable.

The system is extremely flexible and may be used as a control system in mines and tunnels for all types of conveyors and haulages. The system provides tone signaling, emergency trip, loudspeaker communications and two monitored pre-start alarms. The standard system provides transducer monitoring facilities for up to eight line-proved digital inputs. In addition to the pilot outputs, the console has facilities for up to four intrinsically safe relay outputs and one analogue output for unit position indication.
System status is broadcast with voice synthesized messages whenever a status change takes place.

TECHNICAL SPECIFICATIONS
Loudspeaker Communication Facilities
The system is equipped with the BMA (Battery Mini Amplifier) loudspeaking intercom system. The console is fitted with an H12VDC power supply and an intrinsically safe loudspeaker amplifier fitted with a rechargeable battery and handset. Up to 24 BMA intrinsically safe loudspeaker amplifiers can be connected to the console. The audio system can be extended to the surface or to other communications systems.

CONSTRUCTION
The console consists of a metal enclosure housing the I.S.\ equipment. A separate XP enclosure contains the H12DC PSU and Pilot relays. The two are connected by a suitable cable. The main intrinsically safe enclosure contains the electronic circuitry on a single PCB. This compartment has a hinged front door on which there is an LCD, start and stop switches, local remote selector switch, and intrinsically safe amplifier.

DISPLAYS
The console is equipped with an LCD to show the status of the system, including the signaling system and transducer inputs.