legrand Keor MOD 125 Corrigendum Instruction Manual
- June 15, 2024
- Legrand
Table of Contents
CORRIGENDUM
Keor MOD
Installation and Maintenance Manual
Keor MOD 125 Corrigendum
Change the following statement:
4.2.7 Bypass cables installation
To perform a dual input installation with a separate bypass line, the
following requirement must be met:
– if the two lines are supplied by the same source, the residual current
breaker should be a unique one for both lines. If the two lines have a
different electric potential, separate protective devices are required for
each line.
Change the following statements:
4.2.10 Parallel system
It is possible to connect up to three UPS in parallel to support redundancy.
The UPS connected to the parallel system must be of the same type (i.e., Keor
MOD 125 can be installed in a parallel system only with others Keor MOD 125)
and the maximum difference in the number of PM of the cabinets is two.
For Keor MOD 125, the ID address must be from 0 to 2. For Keor MOD 250, the ID
address must be from 4 to 6.
If there is a parallel of two to three Keor MOD 125, this is the ID to set on
each UPS:
UPS 1 : ID=0
UPS 2 : ID=1
UPS 3 : ID=2
The limit for the parallel for Keor MOD 250 is a total of 24 PM. It is
possible to have a parallel of two full UPS units or of three UPS units having
eight PM each. If there is a parallel of two to three Keor MOD 250 cabinets,
this is the ID to set on each UPS:
UPS 1 : ID=4
UPS 2 : ID=5
UPS 3 : ID=6
Add the following paragraph:
4.2.11 Installation with STS (Static Transfer System)
Static Transfer Systems (STS) are intelligent units that transfer the load to
an alternative source when the primary source is out of tolerance. This
ensures “high availability” of the power supply for sensitive or critical
installations.
Normally, STS provide redundancy between 2 independent UPS systems and each
STS is sized according to the load it protects.
Follow the installation manual of the STS for the electrical installation of
the Keor MOD UPS systems to the STS.
The ATS-SYNC ports of the SSS interfaces of the first UPS of each system (the
one having lower ID number) must be connected to each other using the Keor Mod
cross sync cable Cat. Nos. 3 102 59
For the configuration of this function, check paragraph 5.2 about the start-up
procedure.
Replace the text about the external Temperature for the paragraph 4.5 with the
following one:
4.5 SSS interface
| TERMINAL| PINS| FUNCTION
---|---|---|---
Analogic floating inputs| N14| 3-4| EXTERNAL TEMPERATURE
(maximum Input Voltage: 5V)
It allows to check the temperature of the batteries for external cabinets. Use
the Keor Mod battery temperature probe 3 104 82.
Replace the points 11-16 for the paragraph 5.2 with the following ones:
5.2 Start-up procedure
11. If there are two Keor MOD systems connected to an STS (see paragraph
4.2.11), it is necessary to set a
proper configuration for one of the UPS in each system.
Tap on the Settings icon of the menu bar at the bottom of the display. Select
the System tab.
Tap on the pencil icon of the item Syncro2N Mode. If the UPS is part of the
system which is the primary source of supply to the load through the STS,
select MASTER. If the UPS is part of the secondary system which is the
alternative source, select SLAVE. 
12. Provide the mains supply to the UPS by closing the external mains
input/bypass input disconnectors (ON position).
13. Ensure that the EPO is connected to the SSS interface (the default
setting is NC).
Tap on the General Commands icon of the menu bar at the bottom of the display.
Find the item System Power On and tap on the button ON to turn on the UPS.
14. The LEDs on the power modules turn to steady yellow while they are
powered from the batteries. When they are powered from the mains and the UPS
is on-line, the LEDs turn to steady green.
15. Check that the output voltage and frequency values set correspond with
the requirements of the load. If not, turn off the UPS and set the correct
values (see step 6).
16. Provide the power supply to the load by closing the external output
disconnector (ON position).
17. Close the UPS door and remove the key.
Add the following statement:
4.4 Battery drawers installation
6.4 Battery drawers replacement
CAUTION
A drawer must be made up of batteries of the same brand and of the same
manufacturing date.
CHECK THE BATTERY CODE LABEL ON THE BATTERY BLOCK 
DO NOT MIX DIFFERENT BATTERY CODES ON THE SAME DRAWER!
Add the following information:
8.3 Electronic component dismantling
To remove the display, unscrew the four nuts on four M3 threaded studs that
secure the display to the cabinet.
Add the following statement:
4.2.9 Battery cables installation
11 Tables
TABLE 5
INDICATION
The maximum length of the battery cables is 25 m.
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