Cooling Unit - Siemens SINAMICS S120 Function Manual

Function modules

7.6 Cooling unit

Fast DC link discharge (booksize)
It is only possible to quickly discharge the DC link via the Braking Module for the booksize
format. It is activated via binector input p3863 and started after the line contactor opens and
the adjustable delay time (p3862) has expired. The fast discharge is completed when the line
contactor contact closes.
NOTICE
A fast DC link discharge requires the use of a line contactor with feedback signal (p0860)
that is controlled via r0863.1.
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● r0108.26 Drive object function module - Braking Module
● p3860 Braking Module number of modules connected in parallel
● r3861.0...7 BO: Braking Module inhibit/acknowledgement
● p3862 Braking Module DC link fast discharge delay time
● p3863 BI: Braking Module activate DC link fast discharge
● p3864.0...7 BO: Braking Module DC link fast discharge
● p3865[0...7] BI: Braking Module pre-alarm I*t shutdown
● p3866[0...7] BI: Braking Module fault
7.6 Cooling unit
Features
● Control and monitoring functions of a cooling unit
● Automatically activated when using water-cooled power units
● Evaluation of a leakage water sensor (p0266.4)
● Evaluation of a water flow sensor (p0266.5, p0260, p0263)
● Evaluation of a conductivity sensor (p0266.6, p0266.7, p0261, p0262)
● Monitoring the water intake temperature using internal temperature sensors
● Monitoring the flow rating using internal temperature sensors
Description
A cooling unit (RKA) is responsible for cooling the water and the (non) conductivity in the de-
ionized water cooling circuit of a water-cooled power unit. The cooling unit is controlled and
monitored from a PLC that is part of the cooling unit. The "cooling unit" function module
described here is used as an interface between the closed-loop control and the external
control (open-loop) (PLC) of the cooling unit.. The cooling unit is controlled via terminals (e.g.
Control Unit, TM31).
262
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions