STP-301/451 Series Instruction Manual
Operation
8.2
I/O TB2 Terminal Block
This is a terminal block for remote input signals. Use it in accordance with Table 8.4
and Figure 8.2. (See Section 7.5, "Remote Operation (I/O TB2).")
This terminal block operates only during the REMOTE operations. Switch "OFF" the
No.4 switch of the DSW-B with CON 4.
The screw for the term inal is M4
*1
.
Three abbreviations are used in the following table:
COM: Common IN: Input Terminal
OUT: Output Terminal
Table 8.4 I/O TB2 Terminal Block
Terminal Description
Terminals for outputting the power (12 V DC) for driving
remote signals.
(2)
(1)
OV
OUT
+12V
OUT
◇
NEVER use these terminals for the
purpose except REMOTE operations.
DO NOT connect these terminals to
another pow er line. Doing so causes
a failure.
COMMON
IN
(5)
(3)
START
IN
Terminals for inputting the START signal. The following
three methods are available:
1)
Short the circuits between (2)-(3) and (1)-(4). Then,
shorting the circuit between (4)-(5) for 0.3 seconds or
more causes the STP pump to start. When this signal is
input simultaneously with switching ON the breaker on
the rear panel, short the circuit for 5 seconds or more.
2)
Short the circuit between (2)-(3). Then, shorting the
circuit between (1)-(5) causes the STP pump to start.
3)
Input 25 V AC or 12 to 48 V DC between (3)-(5) to start
the STP pump.
With DC input, the (+) side can be connected to either (3)
or (5).
COMMON
IN
(4)
(3)
STOP
IN
Terminals for inputting the STOP signal.
This STOP signal has priority over the START signal.
1)
When 1) above is used to start the STP pump, open the
circuit between (1)-(4) to stop the pump.
2)
When 2) above is used, open the circuit between
(1)-(5) to stop the pump.
3)
When 3) above is used, open the circuit between
(3)-(5) to stop the pump.
*1
JIS
