LEESON SM-Plus Series Sub-Micro Inverters - Manual (Page 61)

P45 SPEED AT MIN SIGNAL
This sets the speed at which the drive will run when it receives the minimum speed reference signal (0
VDC or 4 mA). This is used in conjunction with SPEED AT MAX SIGNAL (Parameter 46) to define
the speed range of the drive when following an analog speed reference signal.
P46 SPEED AT MAX SIGNAL
This sets the speed at which the drive will run when it receives the maximum speed reference signal (10
VDC or 20 mA). This is used in conjunction with SPEED AT MIN SIGNAL (Parameter 45) to define
the speed range of the drive when following an analog speed reference signal.
NOTE: If SPEED AT MIN SIGNAL is set higher than the SPEED AT MAX SIGNAL, the drive
will react inversely to the speed reference signal. Therefore, as the speed reference signal increases, the
drive speed will decrease, and vice-versa.
B.7 SM-Plus ™ PI CONTROL WIRING EXAMPLES
The following diagrams illustrate the most common PI control configurations. The wiring and
corresponding parameter settings are given. In these examples, TB-13A is use to select the setpoint
reference (TB-13B or TB-13C could also be used for this function). The examples show a 2-wire
start/stop circuit.
Example 1: Keypad Setpoint and 4-20 mA Feedback
• Set PI MODE (Parameter 61) to NORMAL 4-20 mA (02) or REVERSE 4-20 mA (04) depending
on the system. Refer to section B.1 to determine whether the system is normal or reverse acting.
• Set TB-13A FUNCTION SELECT (Parameter 10) to KEYPAD SETPOINT (12).
• Close TB-13A to TB-2 to put the drive into PI mode. The ▲ and ▼ buttons can then be used to
adjust the PI setpoint.
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1 2 5 6 11 12 2 14 13A 13B 13C 15 25 2
Keypad Setpoint Select
(P1 Mode Enable/Disable)
4-20 mA
Feedback
Start/Stop
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