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Does Max Number of B208 Limit the number of B308's that can be used?
Does Max Number of B308s Limit the number of B208 's that can be used?
The maximum number of B208 modules and B308 modules that are available to the panel type can be connected at one time.
The only limit would be available power and SDI2 cable distance specifications which are detailed in the module documentation as well as the panel Installation and System Reference Guide (ISRG).
The B-Series panel onboard relay can be configured for either:
Standard Form-C relay
Aux Power configuration, Right two pins covered, the C terminal has 12Vdc available and upon activation will switch to the NO terminal.
Relay A turned off, NO to Common reads 0Vdc. Relay A turned on, NO to Common reads +12Vdc.
Aux Common configuration, Left two pins covered, the C terminal is Common. Upon activation Common is switched to the NO terminal.
Relay A turned off, NO to Aux= 0Vdc Relay A turned on, NO to Aux= 12Vdc
Dry Contact Configuration No jumper used, NO and C and NC works as a standard dry contact.
Relay A turned off, NO to C= Open, NC to C= Short Relay A turned on, NO to C= Short, NC to C= Open
How to activate multiple auxiliary relays on Area Wide or Panel Wide Events.
Programming Area Wide or Panel Wide Relays will only allow a single relay entry. Use an auxiliary relay such as the D130, D133 or D134 when multiple relays are needed to energize on a panel event.
What is the difference between the D133 an D134?
The D133 has a single relay rated at 2A @ 30 VDC – 0.6A @ 125 VAC.
The D134 has two relays rated at 2A @ 30 VDC – 0.6A @ 125 VAC.
Current draw for the Relay is 40 mA per relay when activated.