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6.2.4 MC1000 ANALOG OUTPUT SIGNALS
There are two terminals that can supply analog output signals proportional to
output frequency or load. Terminal TB-10A can provide a 0-10 VDC or a 2-10
VDC signal proportional to output frequency, and TB-10B can provide the same
signals proportional to load. The 2-10 VDC signals can be converted to a 4-20 mA
signal using a resistor in series with the signal such that the total circuit resistance
is 500 Ohms. See Parameters: 42 - TB10A OUT, 43 - @TB10A, 44 - TB10B
OUT, and 45 - @TB10B in Section 18.0 - DESCRIPTION OF PARAMETERS.
NOTE: These analog output signals cannot be used with “loop-powered” devices
that derive power from a 4-20 mA signal.
6.2.5 MC1000 STATUS OUTPUT RELAYS
The control board has one Form C relay at terminals TB-16, TB-17, and TB-18.
Contacts are rated for 2 amps at 28 VDC or 120 Vac.
There are also two open-collector outputs at terminals TB-14 and TB-15. The
open-collector circuit is a current sinking type rated at 30 VDC and 40 mA
maximum. An external power supply (30 VDC max.) must be used to power the
open-collector outputs. The drive does not have a dedicated power supply for the
open-collector outputs.
The Form C relay and the open-collector outputs can be programmed to indicate
any of the following: RUN, FAULT, /FAULT (INVERSE FAULT), LOCK
(FAULT LOCKOUT), @ SPEED (AT SPEED), ABOVE #3, I LIMIT
(CURRENT LIMIT), or AUTO/MAN mode. See Parameters: 52 - TB14 OUT,
53 - TB15 OUT, and 54 - RELAY, in Section 18.0 - DESCRIPTION OF
PARAMETERS.
The following describes the possible relay output settings:
NONE This setting disables the relay output.
RUN The relay energizes when the drive is given a START command,
and remains energized until: a STOP command is given and
the output frequency has decelerated to 0.5 Hz, the drive has
“tripped”, or the input voltage is removed. Note that this
relay indicates only that the drive is in the RUN mode. It
does not necessarily indicate that the motor is turning.
FAULT The relay energizes when input voltage is applied to the drive
and remains energized until the drive “trips” into a fault
condition, or input voltage is removed.
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