Schneider Electric 58 TRX manual Input Range Description, Psp Fbs

Altivar® 58 TRX AC Drives

Assignment of Analog Inputs (AIx)

The following figure shows a diagram of the PI Regulator inputs, calculation points, and outputs.

PI setpoint input AI1					+
or via a configured							–
setpoint
PI
feedback			PSP			FBS
						10
Input AI2
	Time			filter
		constant				Multiplier

Manual speed regulation input AI3 (PIM)

PI	PI regulator					Ramp
inversion						if PSP = 0
PIC		rPG			X		ACC
		rIG
X±1							dEC
		Ramp		AC2
				dE2
		if PSP > 0
								Reference
			Run				Auto
			command
							Man

ACC dEC

Ramp

PI Auto/man selection by Logic Input (PAU)

The following table provides a description of the inputs to the PI Regulator.

	Input	Range	Description
			The setpoint to the PI regulator can be provided from one of three sources:
	PI setpoint		— via analog input, AI1 (AI2 and AI3 can be set to sum with AI1)
			— via preset setpoints defined by logic inputs (see Preset setpoints in this table)
			— over a communication network
	PI feedback		The feedback to the PI regulator can be provided from AI2 (0–20 mA signal) or AI3 (0–10 Vdc
			voltage signal).
			When the PI regulator is configured and a logic input is configured for Auto / Manual, AI3 is the
	Auto / Manual with		speed input in manual mode. The PI regulator function is active in Auto mode. When the logic
			input is open, (set to state 0), Manual mode is active and the PI regulator is active.
	manual speed Input
			Auto mode is active when the logic input is closed, (set to state 1). In manual mode AI3 is
			enabled and the drive controller responds proportionally to the speed reference at AI3.
			Logic inputs can also be used to provide programmable setpoints. Two or four preset setpoints
			require the use of one or two logic inputs respectively.
					2 preset setpoints			4 preset setpoints
	Preset setpoints			LIx		Reference	LIy	LIx	Reference
				0		Analog reference	0	0	Analog reference
				1		Process max. (HSP)	0	1	PI2 (adjustable)
		0–100% of					1	0	PI3 (adjustable)
							1	1	Process max. (HSP)
		process
		maximum
			PI inversion permits an inverted, or reverse-acting, response to the PI setpoint signal. If PIC =
	PI Inversion	Yes/No	No, the motor speed increases when the error is positive. If PIC = Yes, the motor speed
			decreases when the error is positive.
	PI proportional gain	0.01–100	PI regulator proportional gain adjusts the scaling of the PI setpoint signal.
	PI integral gain	0.01–100 s	PI regulator integral gain adjustment.
	Time-constant		PSP can be used to dampen the feedback signal. If PSP is set to zero, the ACC and dEC ramps
		0–10 s	are active. If PSP is > 0, the AC2/dE2 ramps are active. Adjustment of AC2/dE2 can be used to
	feedback filter
			refine the response of the PI loop. The dEC ramp is used on stopping.
	PI feedback scaling	1.0–100	PI feedback scaling allows adjustment of the maximum value of the PI feedback signal so that
			it corresponds to the maximum value of the PI regulator speed reference.
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© 2000–2003 Schneider Electric All Rights Reserved									09/2003