EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company

E20 to E23
E24, E27
Terminal [Y1] to [Y4] Function
Terminal [Y5A/C] and [30A/B/C] Function (Relay output)
E20 through E24 and E27 assign output signals (listed on the next page) to general-purpose, programmable
output terminals [Y1], [Y2], [Y3], [Y4], [Y5A/C] and [30A/B/C].
These function codes can also switch the logic system between normal and negative to define how the inverter
interprets the ON or OFF state of each terminal. The factory default setting is normal logic system "Active ON."
Terminals [Y1], [Y2], [Y3] and [Y4] are transistor outputs and terminals [Y5A/C] and [30A/B/C] are relay contact
outputs. In normal logic, if an alarm occurs, the relay will be energized so that [30A] and [30C] will be closed, and
[30B] and [30C] opened. In negative logic, the relay will be de-energized so that [30A] and [30C] will be opened,
and [30B] and [30C] closed. This may be useful for the implementation of failsafe power systems.
• When a negative logic is employed, all output signals are active (e.g. an alarm would be recognized)
while the inverter is powered OFF. To avoid causing system malfunctions by this, interlock these signals
to keep them ON using an external power supply. Furthermore, the validity of these output signals is
not guaranteed for approximately 1.5 seconds (for 40 HP or below) or 3 seconds (for 50 HP or above)
after power-ON, so introduce such a mechanism that masks them during the transient period.
• Terminals [Y5A/C] and [30A/B/C] use mechanical contacts that cannot stand frequent ON/OFF
switching. Where frequent ON/OFF switching is anticipated (for example, limiting a current by using
signals subjected to inverter output limit control such as switching to commercial power line or
direct-on-line starting), use transistor outputs [Y1], [Y2], [Y3] and [Y4] instead.
The service life of a relay is approximately 200,000 times if it is switched ON and OFF at one-second
intervals.
The table below lists functions that can be assigned to terminals [Y1], [Y2], [Y3], [Y4], [Y5A/C], and [30A/B/C]. The
descriptions are, in principle, arranged in the numerical order of assigned data. However, highly relevant signals
are collectively described where one of them first appears. Refer to the function codes or signals in the "Related
function codes/signals (data)" column, if any.
The EQ7 runs under "V/f control," "dynamic torque control," "vector control without speed sensor," or "vector
control with speed sensor." Some output signals assigned apply exclusively to the specific drive control, which is
indicated by letters Y (Applicable) and N (Not applicable) in the "Drive control" column of the table given below.
(Refer to page 4-2.)
Explanations of each function are given in normal logic system "Active ON."
Function code data
Active ON Active OFF
Functions assigned
Symbol
V/f
Drive Control
w/o
PG
w/
PG
Torque
control
Related
function
codes
0 1000 Inverter running RUN Y Y Y Y
1 1001 Frequency (speed) arrival signal FAR Y Y Y N E30
2 1002 Frequency (speed) detected FDT Y Y Y Y E31, E32
3 1003
Undervoltage detected (Inverter
stopped)
4-88
LU Y Y Y Y
4 1004 Torque polarity detected B/D Y Y Y Y
5 1005 Inverter output limiting IOL Y Y Y Y
6 1006
Auto-restarting after momentary
power failure
IPF Y Y Y Y F14
7 1007 Motor overload early warning OL Y Y Y Y
E34, F10,
F12
8 1008 Keypad operation enabled KP Y Y Y Y
10 1010 Inverter ready to run RDY Y Y Y Y
11
12
13
15 1015
Switch motor drive source between
commercial power and inverter
output (For MC on commercial
line)
Switch motor drive source between
commercial power and inverter
output (For secondary side)
Switch motor drive source between
commercial power and inverter
output (For primary side)
Select AX terminal function (For
MC on primary side)
SW88 Y N N N
SW52-2 Y N N N
SW52-1 Y N N N
E01 to E07
ISW50
(40)
ISW60
(41)
J22
AX Y Y Y Y