Hitachi X200 Series instruction manual Alarm Signal, Or the relay outputs

4−42

Alarm Signal

The inverter alarm signal is active when a fault has

occurred and it is in the Trip Mode (refer to the Run diagram at right). When the fault is cleared the

alarm signal becomes inactive.

STOP

RESET

Stop

RUN

STOP

RESET

Operations and Monitoring

We must make a distinction between the alarm	Fault	Trip
signal AL and the alarm relay contacts [AL0], [AL1]			Fault

and [AL2]. The signal AL is a logic function, which	Alarm signal active
you can assign to the open collector output terminal

[11] or the relay outputs.

The most common (and default) use of the relay is for AL, thus the labeling of its terminals. Use an open collector output (terminal [11]) for a low-current logic signal interface or to energize a small relay (50 mA maximum). Use the relay output to interface to higher voltage and current devices (10 mA minimum).

Option	Terminal	Function Name	State	Description
Code	Symbol
05	AL	Alarm Signal	ON	when an alarm signal has occurred and has not
				been cleared
			OFF	when no alarm has occurred since the last
				clearing of alarm(s)
Valid for inputs:		11, AL0 – AL2		Example for terminal [11] (default output
Required settings		C026, C036		configuration shown – see page 3-54):
Notes:				Inverter output
• By default, the relay is configured as normally
				terminal circuit	AL
closed (C036=01). Refer to the next page for an
explanation.

•In the default relay configuration, an inverter

power loss turns ON the alarm output. the	CM2	11
alarm signal remains ON as long as the external
control circuit has power.
• When the relay output is set to normally closed,		RY
a time delay of less than 2 seconds occurs after
powerup before the contact is closed.
• Terminal [11] is an open collector output, so the	Example for terminal [AL0], [AL1], [AL2] (requires
electric specifications of [AL] are different from	output configuration – see page 4-35 and 3-54):
the contact output terminals [AL0], [AL1],	Inverter logic	AL
[AL2].
• This signal output has the delay time (300 ms	circuit board
nominal) from the fault alarm output.
• The relay contact specifications are in “Control	AL0 AL1 AL2
Logic Signal Specifications” on page 4–6. The
contact diagrams for different conditions are on
the next page.	Power	Load
	supply

See I/O specs on page 4-6