SIL725 Safety Annunciator - RTK - #4

If the integral horn is not required when the audible relays are being used, this canbedisabled.

The standard unit uses either volt-free contacts or 24V signals to trigger alarms. It is possible to change the field contact voltage to alternatives such as 48V or 125V. All versions are capable of accepting AC or DC voltages.

The Annunciators can be supplied pre-mounted in standard 19" aluminium mounting plates. A maximum of 7 cells will fit across a 19" front plate.

If specified at the time of ordering each channel can be supplied with user adjustment of the response time across any range up to 2 seconds.

In harsh environmental conditions where there may be moisture or chemicals within the atmosphere, there is an option to tropicalise the unit. This consists of covering all the pcbs with a conformal coating.

Repeat Relays (Option RLY) There are up to four common relay outputs which are SIL2 certified but there is also an option of individual repeat relays for all alarm ways although these are not certified outputs and should not be used as part of a safety instrumented system.

As standard the alarm will be activated by signals over 22ms in duration. If this time is either too long or too short to suit the particular application there is an option to increase or decrease this response time.

RTK Instruments has extensive systems experience and can supply an alarm annunciator as part of a complete alarm system. This may include installing in wall mounting or floor standing enclosures, integrating into mimic displays or wiring together with other switchgear, power supplies or battery backup systems.

Because of the varied nature of this type of special system, they are priced on application against an agreed specification.

The SIL725 facia is rated at IP41. Optional hinged plexiglass covers are available in all sizes for IP54 applications. For extreme environmental conditions enclosures with viewing windows are available to meet IP66 and IP67 standards.