STP-301/451 Series Instruction Manual
8-2
Operation
Terminal Description
N.O
NORM OUT
N.C COM
(13) (15)
(16)
Terminals for outputting the NORMAL OPERATION state
signal.
When the STP pump is in rated operation, the terminals
between (16)-(13) are closed, and the terminals between
(16)-(15) are opened.
ACC
N.O OUT
(17)
(18)
Terminals for outputting the ACCELERATION state signal.
These terminals are closed when the STP pump is in
acceleration.
REMOTE
N.O OUT
(19)
(20)
Terminals for outputting the STP pump REMOTE
SELECTION state signal.
When the MANUAL/REMOTE changeover switch on the STP
front panel is set to ON (remote side), these terminals are
closed (REMOTE operation).
However, when the rotational speed is less than 20,000 rpm
during power failure backup operation, this signal is not
output.
(1) (3) (5) (7) (9)
(11) (13) (15) (17) (19)
(2) (4) (6) (8)
(10) (12) (14) (16) (18) (20)
TB1 Terminal Arrangement
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