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APPENDIX I: MOTORMASTER® V OPERATION INSTRUCTION
Motormaster V (MMV) is a Variable Frequency Drive (VFD)
that varies the condenser fan speed. The speed varies in pro-
portion to a 4 to 20 mA signal produced by the
Comfort
Link™
controls. The MMV output speed is displayed in Hz.
Configuration:
The MMV is configured for 1 of 12 operation modes based on
the inputs to the control terminal block. 30GXN,R units use
operating modes 5-8. In these configurations, the MMV
follows a 4 to 20 mA speed reference signal present on
terminals 25 (+) and 2 (–). One additional jumper is required to
configure the drive for 50/60 Hz operation and input voltage.
See Table 1 below for proper inputs. Once the drive is
powered, it will change to the mode selected according to the
inputs. No additional programming is required.
Drive Programming:
To enter password and change program values
:
Press
Mode
.
Upper right decimal point blinks.
Display reads “00”.
To enter the PROGRAM mode to access the parameters, press
the
Mode
button. This will activate the PASSWORD prompt
(if the password has not been disabled). The display will read
“00” and the upper right-hand decimal point will be blinking.
Use the
and
buttons to scroll to the password value
(the factory default password is “111”) and press the
Mode
button. Once the correct password value is entered, the display
will read “P01,” which indicates that the PROGRAM mode
has been accessed at the beginning of the parameter menu (P01
is the first parameter).
NOTE:
If the display flashes “Er”, the password was incor-
rect, and the process to enter the password must be repeated.
Press
Mode
to display present parameter setting.
Upper right decimal point blinks.
Use
and
to scroll to the desired parameter number.
Use the
and
buttons to scroll to the desired parameter
number.
Once the desired parameter number is found, press the
Mode
button to display the present parameter setting. The upper
right-hand decimal point will begin blinking, indicating that
the present parameter setting is being displayed, and that it can
be changed by using the up and down buttons.
Use
and
to change setting.
Press
Mode
to store new setting.
Pressing the
Mode
will store the new setting and also exit the
PROGRAM mode. To change another parameter, press the
Mode
key again to re-enter the PROGRAM mode (the param-
eter menu will be accessed at the parameter that was last
viewed or changed before exiting). If the
Mode
key is pressed
within two minutes of exiting the PROGRAM mode, the
password is not required access the parameters. After two
minutes, the password must be entered in order to access the
parameters again.
To change password:
first enter the current password then
change parameter P44 to the desired password.
To reset factory defaults:
change P48 to one of the 4 operat-
ing modes (5-8) and then cycle power.
Table 2 shows all program parameters for each of the 4 operat-
ing modes.
EPM chip:
This drive uses a removable EPM chip to store program
parameters. It should not be removed with power applied to the
VFD.
Table 1: Configuration Tables
*208 v can run in mode 5 or 6.
It is strongly recommended that the user NOT change any
programming without consulting Carrier service personnel.
Unit damage may occur from improper programming.
NOMINAL
VOLTAGE
MODE
Hz
CONTROL INPUT
(pins 25, 2)
START
CONTACTS
208/230/460/575*
5
60
External control 4-20 mA
TB1-TB2
208/380
6
60
External control 4-20 mA
TB13A-TB2
230
7
50
External control 4-20 mA
TB13B-TB2
380/415
8
50
External control 4-20 mA
TB13C-TB2