Command input, External current limit circuit, Analog inputs (i limit) – Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual User Manual
Page 78: External current limit input specification
Publication 1398-5.2 – PDF 1997
6-14
Interfaces
Command Input
The analog command signal to the drive has a range of ±10 Volts. The
signal is either a torque or a velocity command, depending on the
software configuration of the drive. The differential input is processed
by a 14 bit analog to digital converter (ADC) to produce a digital
value.
Figure 6.17
Drive Output Connected to Active High (Sinking) Input
Figure 6.18
External Current Limit Circuit
Table 6.11:
Analog Inputs (I LIMIT)
Analog Input
Pin Number
Function/Description
Current Limit
(I LIMIT)
J1-27
Limits the peak current command, which produces
torque
Table 6.12:
External Current Limit Input Specification
Parameter
Description
Minimum
Maximum
Maximum Current
Short circuit between the input and
ground
-1.5 mA
Input Signal
Range
Allowable voltage applied to the input
0 Volts
+10 Volts
I/O COM
I/O Pwr
INPUT
OUTPUT
(Drive)
I/O COM
J1-6 or J1-13
1K
Drive
J1
+15 Volts
10K
20K
.01
µ
F
20K
-
+
I LIMIT