Hitachi CP-X200 We must make a distinction between the alarm, Or the relay outputs

4－44

444

Alarm Signal

The inverter alarm signal is active when a fault has		STOP
occurred and it is in the Trip Mode (refer to the		RESET
	Run	Stop
diagram at right). When the fault is cleared the		RUN
alarm signal becomes inactive.		STOP
		RESET

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

andOperations Monitoring	Monitoring
and
Operations

Valid for inputs:	11, AL0 – AL2
Required settings	C026, C036

Notes:

ξBy default, the relay is configured as normally closed (C036=01). Refer to the next page for an explanation.

ξIn the default relay configuration, an inverter power loss turns ON the alarm output. the alarm signal remains ON as long as the external control circuit has power.

ξWhen the relay output is set to normally closed, a time delay of less than 2 seconds occurs after powerup before the contact is closed.

ξTerminal [11] is an open collector output, so the electric specifications of [AL] are different from the contact output terminals [AL0], [AL1], [AL2].

ξThis signal output has the delay time (300 ms nominal) from the fault alarm output.

ξThe relay contact specifications are in “Control Logic Signal Specifications” on page 4–6.The contact diagrams for different conditions are on the next page.

Example for terminal [11] (default output configuration shown – see page 3-54):

Inverter output
terminal circuit		AL
	CM2		11

RY

Example for terminal [AL0], [AL1], [AL2] (requires output configuration – see page 4-35 and 3-54):

Inverter logic		AL
circuit board
	AL0	AL1	AL2
	Power		Load
	supply

See I/O specs on page 4-6