IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 16
1.3.3 Interface Board (S4IF) Specifications
IMPULSE•G+/VG+ Series 4 is designed to interface with user input and output devices through the S4IF interface
board. This eliminates the need for an additional interface relay or isolation circuitry. The S4IF comes in 24 VDC,
24 VAC (50/60 Hz), 42 to 48 VAC (50/60 Hz), and 120 VAC (50/60 Hz) options.
The S4IF has eight optically isolated input terminals which can be used to connect the user input device to the
VFD. The eight terminals are multi-function and programmable.
The S4IF has four 250 VAC, 1.0 Amp relays for output devices. It includes three programmable multi-function
output terminals, and a fault output terminal.
NOTE:
The 250 VAC relays on the 120 VAC S4IF boards must be derated to 120 VAC to comply with CE.
Table 1-7: S4IF Ratings
* Certified for CE compliance.
1.3.4 S4I and S4IO Option Card Specifications
IMPULSE•G+/VG+ Series 4 is compatible with AC digital input (S4I) and AC digital input/output (S4IO) option
cards. The option cards expand the I/O capability of the VFD in addition to the I/O on the interface board.
The S4I has four optically isolated input terminals. The S4IO has four optically isolated input terminals and four dry
contact form A relays.
Table 1-8: S4I Ratings
Table 1-9: S4IO Ratings
S4IF Model
S1-S8
Voltage
Frequency
S4IF-120A60
120 VAC
50/60 Hz
S4IF-120A*
120 VAC
50/60 Hz
S4IF-48A60
42–48 VAC
50/60 Hz
S4IF-24A60
24 VAC
50/60 Hz
S4IF-24D00*
24 VDC
-
S4I Model
I1-I4
Voltage
Frequency
S4I-120A60
120 VAC
50/60 Hz
S4I-48A60
42–48 VAC
50/60 Hz
S4I-24A60
24 VAC
50/60 Hz
S4IO Model
I1-I4
O1-O6
Voltage
Frequency
Voltage (max)
Current (max)
S4IO-120A60
120 VAC
50/60 Hz
250 VAC
(120 VAC for CE)/
30 VDC
1.0 A
S4IO-48A60
42–48 VAC
50/60 Hz
S4IO-24A60
24 VAC
50/60 Hz
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