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GENERAL OPERATION — The speed varies in proportion
to a 4 to 20 mA signal produced by the ComfortLink™ con-
trols. The MMV output speed is displayed in Hz.
The ComfortLink controls must be configured for MMV
operation in order for it to operate. This is configured under the
Configuration menu M.MAST MMR.S and selecting
“YES”. This configuration menu also contains the gains and
minimum speed for the motormaster control logic.
CONFIGURATION — The MMV is configured for 1 of 12
operation modes based on the inputs to the control terminal
block. The 38AP units use operating modes 5-8. In these con-
figurations, 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 opera-
tion and input voltage. See Table 23 for proper inputs. Once the
drive is powered, it will change to the mode selected according
to the inputs. See Fig. 64.
DRIVE PROGRAMMING
To enter password and change program values:
1. Press Mode.
2. Upper right decimal point blinks.
3. Display reads “00”. To enter the PROGRAM mode to ac-
cess the parameters, press the Mode button. This will ac-
tivate 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. (See Fig. 63.)
4. 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 incorrect,
and the process to enter the password must be repeated.
5. Press Mode to display present parameter number.
Upper right decimal point blinks.
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 up-
per 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 pass-
word is not required to access the parameters. After two min-
utes, the password must be entered in order to access the pa-
rameters again.
To change password: first enter the current password then
change parameter P44 to the desired password.
To disable automatic control mode and enter manual speed
control mode:
1. Change P05 to ‘01- keypad’.
2. Push UP and DOWN arrow key to set manual speed.
3. Set P05 to ‘04 - 4-20mA control’ to restore 4 to 20 mA
control.
EPM CHIP — The drive uses a electronic programming mod-
ule (EPM) chip to store the program parameters. This is an
EEPROM memory chip and is accessible from the front of the
VFD. It should not be removed with power applied to the
VFD.
LOSS OF CCN COMMUNICATIONS — Carrier Comfort
Network
®
(CCN) communications with external control
systems can be affected by high frequency electrical noise gen-
erated by the Motormaster V control. Ensure unit is well
grounded to eliminate ground currents along communication
lines.
If communications are lost only while Motormaster V con-
trol is in operation, order a signal isolator (CEAS420876-2)
and power supplies (CEAS221045-01, 2 required) for the CCN
communication line.
Fault Codes
— The drive is programmed to automatically re-
start after a fault and will attempt to restart three times after a
fault (the drive will not restart after CF, cF, GF, F1, F2-F9, or
Fo faults). If all three restart attempts are unsuccessful, the
drive will trip into FAULT LOCKOUT (LC), which requires a
manual reset.
CAUTION
DO NOT connect incoming AC power to output terminals
T1, T2, and T3! Severe damage to the drive will result. Do
not continuously cycle input power to the drive more than
once every two minutes. Damage to the drive will result.
CAUTION
It is strongly recommended that the user NOT change any
programming without consulting Carrier service personnel.
Unit damage may occur from improper programming.