Fuji Electric FRENIC-HVAC User Manual page 52

Digital Input Terminals
Symbol Name
[X1] Digital input 1
[X2] Digital input 2
[X3] Digital input 3
[X4] Digital input 4
[X5] Digital input 5
[X6] Digital input 6
[X7] Digital input 7
[FWD] Run forward
command
[REV] Run reverse
command
Functions
(1) Various signals such as "Coast to a stop," "Enable external
alarm trip," and "Select multistep frequency" can be assigned
to terminals [X1] to [X7], [FWD] and [REV] by setting
function codes E01 to E07, E98, and E99. For details, refer to
Chapter 6 "FUNCTION CODES."
(2) Input mode, i.e. SINK/SOURCE, is changeable by using the
slide switch SW1. (Refer to Section 2.3.2 "Setting up the slide
switches.")
(3) Switches the logic value (1/0) for ON/OFF of the terminals
[X1] to [X7], [FWD], or [REV]. If the logic value for ON of
the terminal [X1] is "1" in the normal logic system, for
example, OFF is "1" in the negative logic system and vice
versa.
(Digital input circuit specifications)
＜Control circuit＞
[PLC]
SINK
SW1
SOURCE
[X1] to [X7],
[FWD], [REV]
[CM]
Figure 2.4 Digital Input Circuit (a)
Item
Operating ON level
voltage
OFF level
(SINK)
Operating
ON level
voltage
OFF level
(SOURCE)
Operating current at
ON
(Input voltage is at 0 V)
(For [X7])
Allowable leakage current
at OFF
2-19
2.3 Terminal Specifications
+24 VDC
Photocoupler
5.4kΩ
(1.6kΩ for [X7])
Min. Max.
0 V 2 V
22 V 27 V
22 V 27 V
0 V 2 V
2.5 mA 5 mA
(9.7 mA) (16 mA)
− 0.5 mA