CHARMs Smart Logic Solver (CSLS) SIS hardware overview

CSLS SIS hardware consists of:

CHARMs Smart Logic Solvers (CSLS): CSLS process LS CHARM signals and run the SIS modules that contain the safety system logic. Redundant CSLS can support up to 96 LS CHARMs. The maximum number of LS CHARMs (96) are organized in eight banks of 12 LS CHARMs. Each bank of 12 LS CHARMs is held by a CHARM Baseplate. CSLS mount on CHARMs Smart Logic Solver Carriers and connect to the Local Safety Network through connectors on the carriers.
SZ Controllers: SZ Controllers mount on either the SZ Controller Carrier or the Dual Universal Safety Carrier and connect to the Area Control Network and the Local Safety Network through ports on the carrier. SZ Controllers isolate CSLS from the rest of the system. SZ controllers receive redundant 24 VDC input through the carrier. Redundant Modbus TCP ports on the carrier enable an SZ controller to support standalone SIS installations.
Local Safety Network Bridges: Local Safety Network Bridges (LSNB) connect Local Safety Networks under different SZ Controllers so that secure parameters can be passed between CHARMs Smart Logic Solvers on different Local Safety Networks. Local Safety Network Bridges mount on Dual Universal Safety Carriers that house redundant connections to the Local Safety Network and to the Global Safety Network.
CHARMs Smart Logic Solver Carriers: CSLS Carriers are vertical DIN rail-mounted carriers that hold redundant CSLS and Power Modules. The CSLS Carrier provides 24 VDC input to the CSLS and to the Power Modules. The Power Modules provide 6.3 VDC to the LS CHARMs. The CSLS Carrier houses primary and secondary Safety Network Ports for connections to the Local Safety Network and a keylock switch that restricts how and when the CSLS can be unlocked for downloads and upgrades.
Dual Universal Safety Carriers: Dual Universal Safety Carriers are horizontal DIN rail-mounted carriers that hold redundant Local Safety Network Bridges or SZ Controllers. The Dual Universal Safety Carrier houses primary and secondary Ethernet Isolation Ports for connections to the Global Safety Network and Local Safety Network when used with Local Safety Network Bridges and connections to the DeltaV Area Control Network and the Local Safety Network when used with SZ Controllers.

SZ Controller Carriers: SZ Controller Carriers are vertical DIN rail-mounted carriers that hold redundant SZ Controllers. The SZ Controller Carrier houses primary and secondary Ethernet Isolation Ports for connections to the DeltaV Area Control Network and to the Local Safety Network.

Baseplates: CHARM Baseplates hold Logic Solver CHARMs (LS CHARMs) and I.S. Baseplates hold LS Intrinsically Safe CHARMs. The baseplates connect to the CSLS Carrier and to other baseplates through connectors on the baseplates. Each baseplate holds up to 12 terminal blocks that hold LS CHARMs, and an Address Plug that determines the address of the baseplate and the CHARMs installed on the baseplate.
Logic Solver (LS) CHARMs: LS CHARMs are single I/O channels that plug into the CHARM Terminal Blocks on the CHARM Baseplate. The DeltaV system supports analog input, discrete input, discrete output (including LS DO redundant DTA and LS DO redundant ETA CHARMs), LS DVC HART simplex and redundant DTA, LS power output, LS thermocouple input, LS RTD / Resistance Input, and LS voltage CHARMs as well as LS Intrinsically Safe analog input, discrete input, RTD/ Resistance input, and Thermocouple / mV input CHARMs.