Control unit
MU1000C Language
USER MANUAL
Page 6 (38)
Eltek Valere Industrial GmbH ©2008
1. Applications, Functioning
The Signalling and Monitoring unit MU 1000C (named MU 1000C in the
following) is used as a central monitoring- and signalling unit in DC–power
supply systems. These plants can be battery-powered or can operate as direct
supply for DC-bus bars.
They are used in all the places, where plant information is collected (such as
voltages and current at different intersections of the system), where
parameters have to be monitored and errors signalled or when a boost charge
function or a discharge test is required in a battery system.
The mounting of the monitoring unit can be very universal. Thus it is just as
possible to mount it in 19” – complete slide-in units (above 3HE) as in a
19”- partial slide-in unit (with 1/3-19” width).
The individual signal parameters, like voltages and current, are connected over
secured lines directly to the MU 1000 over a plug (DIN41612, R48).
The MU1000 receives these values, indicates them on the display, compares the
values with adjusted monitoring thresholds, gives disturbance signals (LED +
relay) and operates in the boost charge operation as well as discharge test op-
eration as a controlling device for the connected rectifier.
Additionally the output values of rectifier REC and inverter INV can be read out if
CAN-bus is connected.
The user language can be selected over a parametric menu. All the necessary
monitoring parameters can be read by the end-user directly at the site of
application and can be adjusted over a code-protected service menu. Special
software adaptations are not necessary for this.
The MU 1000C can be obtained for 2 different voltage ranges and can be
directly connected to the corresponding DC potential without any further
measures.
The software as well as the default values for the plant parameters for the MU
1000C is programmed in an EPROM. The current values (adaptations on site etc)
as well as the error data are stored in an EEPROM.
If due to a defect in the MU 1000C, there is cancellation in the EEPROM, then
when the device is switched on again, there is a reprogramming with the
default values of the plant from the EPROM. During this reprogramming, all the
functions, which have a control, function for external devices (boost charge op-
tion, discharge test) are deactivated in order to prevent damage due to false
values in the plant. These functions must be manually activated again in the
service menu.
