TECO-Westinghouse EQ7 Series, Инструкция по эксплуатации

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2-24
Table 2.7 Symbols, Names and Functions of the Control Circuit Terminals (Continued)
Cla
s
s
ifi
-
c
a
ti
o
n
Symbol Name Functions
Rel
a
y
o
u
tp
u
t
[30A/B/C]
Alarm relay
output
(for any error) (1) Outputs a contact signal (SPDT) when a protective function has been activated to stop
the motor.
Contact rating: 250 VAC, 0.3A, cos

= 0.3, 48 VDC, 0.5A
(2) Any one of output signals assigned to terminals [Y1] to [Y4] can also be assigned to this
relay contact to use it for signal output.
(3) Switching of the normal/negative logic output is applicable to the following two
contact output modes: "Active ON" (Terminals [30A] and [30C] are closed (excited) if the
signal is active.) and "Active OFF" (Terminals [30A] and [30C] are opened (non-excited) if
the signal is active while they are normally closed.).
Com
m
u
n
ic
a
ti
o
n
[DX+]/
[DX-]/
[SD]
RS-485
communications
port 2
(Terminals on
control PCB)
A communications port transmits data through the RS-485 multipoint protocol between the
inverter and a computer or other equipment such as a PLC.
(For setting of the terminating resistor, refer to Section 2.3.6 "Setting up the slide switches.")
RJ-45
connector
for the
keypad
RS-485
communications
port 1
(Standard RJ-45
connector) (1) Used to connect the inverter with the keypad. The inverter supplies the power to the
keypad through the pins specified below. The extension cable for remote operation also
uses wires connected to these pins for supplying the keypad power.
(2) Remove the keypad from the standard RJ-45 connector and connect the RS-485
communications cable to control the inverter through the PC or PLC (Programmable
Logic Controller). For setting of the terminating resistor, refer to Section 2.3.6 "Setting up
the slide switches."
Figure 2.18 RJ-45 Connector and its Pin Assignment*
* Pins 1, 2, 7, and 8 are exclusively assigned to power lines for the keypad, so do not
use those pins for any other equipment.