Siemens SIMOCODE pro Manual

List of abbreviations
A.1 List of abbreviations
106
SIMOCODE pro - Fail-Safe Digital Modules
Manual, 11/2017, NEB631679702000/RS-AA/002
Abbreviation
Meaning
PFDavg
Average probability of dangerous failure of a safety function on demand
PFHD Probability of dangerous failure per hour
PL
Performance Level
PCS Process Control System
ProdIS
Product Information System
PZ
Pozidriv
RTU
Remote Terminal Unit
SELV
Safety Extra Low Voltage
SF
Group error
SIL
Safety Integrity Level
PLC
Programmable controller
TIA
Totally Integrated Automation
TN
Terre-Neutre (ground neutral)
TT
Terre-Terre (ground-ground)
T
OFDT
Total one fault delay time (maximum response time when error is present)
T
WCDT
Total worst case delay time (maximum response time in error-free state)

Siemens SIMOCODE pro Specifications

General

Protection Class	IP20
Mounting Type	DIN rail mounting
Rated Operational Voltage	24 V DC
Rated Current	Up to 820 A
Protection Functions	Overload, short-circuit, phase failure, asymmetry, ground fault, motor stall
Operating Temperature Range	-25°C to +60°C
Communication Protocols	PROFIBUS DP, PROFINET, Modbus RTU
Analog Outputs	Up to 2
Temperature Monitoring	PTC/KTY, RTD (PT100/PT1000)
Digital Outputs	Relay outputs, Solid-state outputs
Analog Inputs	0/4-20mA, PT100/PT1000