Rockwell Automation 1336 3-20HP FRN 1.01-3.01 - Manual (Page 67)

Wiring
Chapter 6
6-20
Terminal Block TB2 - Terminal 6 and Signal Common
Control and Signal Wiring (cont.)
4-20 mA Input
This terminal is provided to terminate a +4 to 20mA DC speed reference
signal. Parameter 84 sets the 4-20mA signal to be either directly or
inversely proportional. The minus signal is terminated at Terminals 3 or 4.
The input impedance from Terminal 6 to either 3 or 4 is approximately
250
Ω
. The range of frequency control is between the minimum and
maximum drive frequency settings. The frequency resolution is the range
divided by 726 (but no less than 0.005Hz). Refer to the 1336 Programming
Manual for additional details.
!
ATTENTION: Unexpected machine acceleration can cause injury
or death.
If Parameter 84 is enabled, a loss of the 4-20mA reference signal at
drive terminal block TB2 will allow the drive to immediately
accelerate to the maximum frequency set by Parameter 19.
Ensure that all control connection integrity is maintained and
routinely inspected.
!
ATTENTION: Terminal 6 of TB2 is internally protected from
reverse polarity signals and input signals rising above 24mA. If
reverse polarity or current levels are maintained above 24mA,
signals may be degraded resulting in damage to the drive or
connected equipment.