Multiple 555's may be "chained" to obtain more channels
Rugged black anodized aluminum case
Space provided on case labels for user's data
Purpose / Engine Alarm Application
The Model 555 Auxiliary Alarm Monitor is used in conjunction with engine protection installations that include a Model 550 Engine SaverŪ, a Model 565 Gauge Package, Model 995 Marine Engine Monitor or other equipment requiring additional auxiliary alarm inputs. The 555 permits the Engine Saver's AUX 2 input to handle up to six switch-type sensors or voltage inputs. A unique programming feature on each of the six channels allows any type of switch arrangement to be used. The 555 may also be used as a stand-alone alarm monitor. Multiple 555's may be connected for more channels.
Description
The Model 555 consists of six identical channels that accept a switch closure or a voltage from various sensing devices to represent an alarm condition. The switch may be normally open or normally closed. It may switch to negative or to +24 VDC. Each of the six channels may be programmed independently to meet the needs of each individual sensing device. Each channel has a time delay to prevent false tripping. Faults are latched and displayed on individual indicators, which remain illuminated until the unit is reset. Alarm monitoring may be continuous, or enabled by an external enable signal. The unit may be programmed for "multi-trip" or "exclusive-trip" modes of operation.
