Siemens SIMOCODE pro System Manual page 681

Low voltage
Master
Memory module
Monitoring 0/4-20 mA
Monitoring functions
Monitoring the number of starts
Monitoring voltage
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
All voltage levels used for the distribution of electricity which
are located in a range whose upper limit in AC networks is
generally 1000 V.
PROFIBUS DP is based on a master slave architecture.
Telegrams are sent from the master to the actuated station
(slave) and are answered by it in return.
The memory module is plugged into the system interface and
is used for fast reading in or out of the entire SIMOCODE pro
parameterization, e.g. if a unit is exchanged.
SIMOCODE pro supports two-phase monitoring of the analog
signals of a transducer (standard 0/4 - 20 mA output signal).
The analog signals are fed to the "0/4 - 20 mA" function block
via the analog module.
The following monitoring functions
• Earth-fault monitoring
• Current limit monitoring
• Voltage monitoring
• Cos phi monitoring
• Active power monitoring
• Monitoring 0/4 A - 20 mA
• Operation monitoring
• Temperature monitoring (analog)
Operate "in the background" in the same way as motor
protection and motor control. They can be active or not,
according to the control function selected.
Monitoring the number of starts can protect system parts
(motors and switching devices such as soft starters and
converters) from too many start processes within a
parameterizable time frame and, thus, prevent damage. This
is particularly useful for commissioning or manual control.
SIMOCODE pro supports two-phase undervoltage
monitoring of either a three-phase network or a one-phase
network for freely selectable limits, direction of rotation (for
AC) or readiness to start.
Glossary
Glossary-9