Toshiba VF-FS1 - Manual (Page 44)

E6581381
B-8
2
Terminal
symbol
Input/output Function
Electrical
specifications
Inverter internal circuits
FLA
FLB
FLC
Output
Multifunction programmable relay contact
output.
Detects the operation of the inverter's
protection function.
Contact across FLA-FLC is closed and FLB-
FLC is opened during protection function
operation.
250Vac-1A
(cos
φ=1)
: at resistance load
30Vdc-0.5A
250Vac-0.5A
(cos
φ=0.4)
RY
RC
Output
Multifunction programmable relay contact
output.
Standard default settings detect and
output low-speed signal output
frequencies.
Multifunction output terminals to which two
different functions can be assigned.
250Vac-1A
(cos
φ=1)
: at resistance load
30Vdc-0.5A
250Vac-0.5A
(cos
φ=0.4)
■ SINK (Negative) logic/SOURCE (Positive) logic (When the
inverter's internal power supply is used)
Current flowing out turns control input terminals on. These are called sink logic terminals.
The general used method in Europe is source logic in which current flowing into the input terminal turns it
on.
Sink logic is sometimes referred to as negative logic, and source logic is referred to as positive logic.
Each logic is supplied with electricity from either the inverter's internal power supply or an external power
supply, and its connections vary depending on the power supply used.
Source (Positive) logic
Inverter
P24
F
Programmable
controller
Common
Output
Input
24V DC
Sink (Negative) logic
F
CC Common
Output
Input
24V
DC
Inverter Programmable
controller
Slide switch SW4:SINK Slide switch SW4:SOURCE