5.5.3
66B
These are the contact output signals that output the alarm statuses of this unit. Connect them as necessary
by following the information below.
Terminal
Name
Signal Name
Output Content: factory default setting
ALMa
Alarm output, NO contact
The NO contact becomes
closed
when power supply turns ON.
When an alarm (E ) or L70 (reverse rotation warning) occurs or a pressure
switch is actuated, it
opens
(or closes if it is an NC contact).
ALMb
Alarm output, NC contact
COM
Alarm output common
Can be either positive or negative
CAUTION
The switching capacity of the contact outputs is DC30 V/1 A (at resistance load). Note that driving a load
exceeding the permissible current may damage the contacts or other components.
The minimum applicable load for the contact outputs is DC24 V/10 mA (at resistance load), but this is
only a guide to the lower limit where switching is possible with a minute load. The value varies
depending on the switching frequency, environmental conditions, etc., so it is advisable to check the
actual value.
When driving inductive loads, implement surge protection measures.
11.2
42 B
Alarm Causes and Corrective Actions
ALMa
ALMb
COM
Alarm output, NO contact
Alarm output, NC contact
Alarm output common
Power ON: Normal status
