43
KraftPowercon Sweden AB, Hjalmar Petris väg 49, S-352 46 Växjö, Sweden, Tel: +46 470-705200, Fax: +46 470-705201,
www.kraftpowercon.com
NC .......... Terminal X6:9
Alarm relay D: C ............. Terminal X6:10
NO .......... Terminal X6:11
NC
..........
Terminal
X6:12
6.4.5.3
Fan control
The output for controlling of a battery compartment fan is activated automatically for equalizing
charging. In order to ensure that all hydrogen gas is expelled, the output continues to be activated
for an additional hour following the completion of equalizing charging.
The relay contact is normally open and closed to start the fan.
Connect to output X6:13-14 “FAN”.
6.4.5.4
Battery test
The “BATT.TEST” output is only used in the case of “Double systems” (see section
4.4.4). The
output is connected from sub-system A to the corresponding input in sub-system B (see section
6.4.4.4). It is made up of an opto-coupler to give galvanic insulation between the sub-systems.
Connect to output X6:15-16 “BATT TEST”.
6.4.6
Internal communications interface
Internally I
2
C is used between the units.
The connections are described in more detail in section
6.3.
6.4.7
External communications interface
The monitoring unit is prepared for external communications via RS-232, Ethernet and I
2
C.
6.4.7.1
RS-232
RS-232 (X1) is intended for configuration via PC and connection to certain field bus units.
A special program is required for configuration via PC. The program is used primarily in
connection with testing prior to delivery and is not adapted for general use. All configuration
handled by the program can also be carried out via the operator panel.
DANGER:
Note that the RS232-port is NOT insulated, but is galvanically connected to the DC
system's negative terminal. To avoid personal injury, the system's negative terminal must therefore
be connected to earth when a PC is connected to the RS232 port. Only use portable PCs with full
insulation to the mains side and earth.
The RS232 port is missing in systems for 440/500V.
6.4.7.2
Ethernet
The Ethernet port (X3) is primarily intended for service purposes.
6.4.7.3
I
2
C
The I
2
C port (X8) is intended for communications with external accessories for PCM2. See
instructions for each accessory for more information.
