Eurotherm 590SP, Product Manual

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5
590SP Digital Product Manual
Chapter 5 Troubleshooting
DRIVE DIAGNOSTICS
Many signals can be monitored in the MMI display. The diagnostic parameters are "read-only" and are very useful for
tracing configuration problems. The following tables contain a description of each parameter and its range. Parameters
denoted with an asterisk (*) are the controller's analog or digital I/O. The drive has been shipped with its I/O tagged to
the parameter listed in the description field.
Parameter Description
ACTUAL NEG I LIM Overall negative current limit value
ACTUAL POS I LIM Overall positive current limit value
ANIN 1 (A2)* Speed setpoint no. 1.
ANIN 2 (A3) Hardwired. Speed setpoint no. 2 or current demand if C8 =
ANIN 3 (A4)* Speed setpoint no. 3 (ramped).
ANIN 4 (A5)* Speed setpoint no. 4 or negative current clamp if C6 = ON
ANIN 5 (A6)* Main current limit or positive current clamp if C6 = ON
ANOUT 1 (A7)* Scaled speed feedback.
ANOUT 2 (A8)* Total speed setpoint.
AT CURRENT LIMIT Current demand is being restrained by the overall current l
AT STANDSTILL AT ZERO SPEED and "AT ZERO SETPOINT"
AT ZERO SETPOINT At zero speed demand
AT ZERO SPEED At zero speed feedback
BACK EMF Calculated motor back EMF including IR. compensation
CURRENT DEMAND Current loop demand (speed error PI output or external cur
by all the current limits)
CURRENT FEEDBACK Scaled and filtered armature current
DIGIN 1 (C6)* Symmetrical current clamps / Asymmetrical (bipolar) curre
Bipolar).
DIGIN 2 (C7)* Ramp hold input (ON = Hold).
DIGIN 3 (C8)* Current demand isolate; giving speed or current mode of o
Current mode)
DIGOUT 1 (B5)* At zero speed.
DIGOUT 2 (B6)* Drive healthy. Health is also displayed on a front panel LE
when the start is low
DIGOUT 3 (B7)* Drive ready to run (all alarms healthy and mains synchroniz
Figure 5.12 - Diagnostic Parameters