IMPULSE
®
•G+ & VG+ Series 4 Technical Manual
November 2020
Page 18
1.3.2 S4IF Interface Board 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 terminals, and are used for speed control and other controls.
The VFD 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 24 VAC, 42-48 VAC, and 120 VAC S4IF boards must be derated to 120 VAC to
comply with CE.
Table 1-7: S4IF Ratings
* Certified for CE compliance.
1.3.3 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, without the need for interface relays or isolation
circuitry.
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 AS4IO-48A60 42–48 VAC 50/60 Hz
S4IO-24A60 24 VAC 50/60 Hz
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