Schneider Electric Altivar 58 VW3-A58101 Uživatelský manuál stáhnout pdf (Strana 72)

ALTIVAR

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58 Keypad Display VVDED397047US R8/01

Chapter 2 — Menus 08/01

Using the Analog Outputs on the I/O Extension Cards

The analog outputs on the Analog I/O and Digital I/O extension cards are

current outputs. The minimum and maximum values (AOL and AOH

parameters) are configurable, each with a range of 0–20 mA.

Figure 20: I/O Extension Card Minimums and Maximums

Motor Current

When configured for motor current (OCr), the analog output provides a

signal proportional to motor current. The minimum configured value

corresponds to zero while the maximum configured value of the analog

output corresponds to 200% of the drive controller’s constant torque

rating.

Output Frequency

When configured for output frequency (OFr), the analog output provides

a signal proportional to the motor frequency estimated by the drive

controller. The minimum configured value corresponds to zero while the

maximum configured value of the analog output corresponds to the

maximum frequency setting, not the high speed setting.

Ramp Output

When configured for ramp output (OrP), the analog output provides a

signal proportional to the frequency the drive controller is commanding

the motor to run. The minimum configured value (AOL) corresponds to

zero while the maximum configured value of the analog output (AOH)

corresponds to the maximum frequency setting (tFr), not the high speed

setting.

(mA)

Max.

Min.

0 mA 20 mA

20 mA maximum4 mA minimum

Parameter

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 111 112

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Schneider Electric Altivar 58 VW3-A58101 Uživatelský manuál Strana 72