05701-A-0284 Honeywell Catalytic Sensor Drive

05701-A-0284  Honeywell  Catalytic Sensor Drive

Description

The Honeywell 05701-to-0284 is a Catalytic Sensor Drive module used in various Honeywell gas detection systems. This component is critical for powering and controlling catalytic sensors, which detect combustible gases such as methane, propane, and butane.

Key Specifications and Features:

Compatibility: Designed for use with Honeywell’s 5701 series gas detectors.

Function: Provides power and control signals to catalytic sensors.

Reliability: Engineered to perform reliably in harsh environments.

Easy Installation: Simple plug-and-play setup ensures quick integration.

Separately Powered Detectors

Separately powered detectors (e.g. most IR, UV/IR Flame detectors) require three or four

wire connections. The detector documentation will indicate the 0V and +24V power

connections and the positive and negative loop connections. When using flame detectors it

is common practice to use only one detector per loop input.

At the System 57 end of the field cables the two detector signal wires should be connected

to the appropriate channels IN+ and IN- terminals of the Hex Relay Interface Card that is

attached to the required 5704F Control Card. The loop current always flows from the IN+

terminal and returns via the IN- terminal.

The power for the detector may be sourced from the System 57 power supply or a separate

field supply, whichever is most appropriate. In small systems, power can be obtained from

terminals 35 and 36 of the Hex Relay Interface Card, but care must be taken not to exceed

the maximum backplane current loading of 8A. A separate dc power distribution block is

recommended.

For fault monitoring purposes, an end of line (EOL) resistor must be fitted in or after the last

detector on the loop. The typical value for end of line resistance is 5.1k ohms.

The detector cable screen, or steel wire armour or braid as appropriate, should be

connected to the system protective earth. This can be achieved where the cable enters the

screen

cabinet by using a metal cable gland, or by other suitable means, and avoiding any

tails within the cabinet.

Where the cable consists of a separate screen sheath and wire armour or braid, the armour

should be connected at

the cabinet entry to the protective earth and the screen sheath

should be connected to the GROUND terminal of the Hex Relay Interface Card or to a

suitable instrument earth point.