KEPCO RA 19-7B Operator Manual - Manual (Page 15)

RA 19-7B 011409
2-3
or externally by connecting the appropriate pins of the associated I/O connector. DIP switch
functions are explained in Table 2-2. Refer to PAR. 2.3.1 to gain access to the DIP switches.
Slot configuration requires the following selection:
1. Select local or remote sensing (PAR. 2.4.1).
2. Select independent (PAR. 2.4.1), parallel (PAR. 2.4.2), or series (PAR. 2.4.3) operation.
3. Optional: Select close-on-failure or open-on-failure alarm (PAR. 2.4.4).
TABLE 2-2. CONFIGURATION DIP SWITCH* FUNCTIONS
DIP
SWITCH
POSITION
FUNCTION DIP SWITCH SET TO ON (CLOSED) DIP SWITCH SET TO OFF (OPEN)
NOTES: 1. BOLD TYPE INDICATES FACTORY SETTINGS.
2. For DIP switch A1, only positions 1 and 2 are active; all other positions are not connected.
1, 2
Local /
Remote
Sensing
Selection
Required ON for independent operation with
Local Sensing. Position 1 connects V+ to S+,
Position 2 connects V– to S– (see PAR. 2.4.1.1). Position 1 and 2 required OFF for:
a) Independent configurations using Remote
Sensing (see PAR. 2.4.1.3).
b) Independent configurations using Local Sens-
ing with user supplied connections from V+ to S+
and V– to S– (see PAR. 2.4.1.2).
c) All parallel configurations (sensing must be
established using external wires) (see PAR.
2.4.2.3).
d) All series connections (see PAR. 2.4.3).
3, 4
Connect
Sense
+ and –
in parallel
Required ON for parallel configurations using DIP
switch settings to connect the sense leads in paral-
lel. Position 3 connects +S to adjacent slot +S,
Position 4 connects –S to adjacent slot –S (see
PAR. 2.4.2.3.1 for local sensing, PAR. 2.4.2.3.3 for
remote sensing). Position 3 and 4 required OFF for all configu-
rations except parallel configurations using
DIP switch settings to connect the sense
leads in parallel.
5
Current
Share
Required ON for parallel operation with forced cur-
rent sharing (connects current share lines in paral-
lel) unless connections are made via external
wires (see PAR. 2.4.2.2.1) Required OFF for
a) independent and series configurations.
b) Parallel configurations with forced current
sharing using external wires to connect cur-
rent share lines in parallel.
c. Parallel configurations without forced cur-
rent sharing (current balancing).
6, 7
Close on
Failure
Alarm
When set to ON, allows a single alarm to provide
failure indication (contact closure between N.O. pin
and COM pin) if any one of many power supplies
fails (see PAR. 2.4.4.1). When set to OFF, individual power supplies
produce closure between I/O connector N.O.
and COM pins upon failure (see PAR. 2.4.4.1).
7, 8
Open on
Failure
Alarm
When set to ON, allows a single alarm to provide
failure indication (contact open between N.C. pin
and COM pin) if any one of many power supplies
fails. Position 7 of DIP switch 2 used for COM pin
connection between slots 1 and 2 (see PAR.
2.4.4.2). When set to OFF, individual power supplies
produce open between I/O connector N.C. and
COM pins upon failure (see PAR. 2.4.4.2).