Section 1
General Information
4-20 Programming & Operation
MN715
Table 4-2 Parameter Block Definitions Level 2
Continued
Block Title
Parameter
Description
SECURITY
CONTROL
Security State
Off - No security access code required to change parameter values.
Local Security - Requires security access code to be entered before changes can be made
using the Keypad.
Serial Security - Requires security access code to be entered before changes can be made
using the RS232/422/485 link.
Total Security - Requires security access code to be entered before changes can be made
using the Keypad or serial link.
Note: If security is set to Local, Serial or Total you can press PROG and scroll through the
parameter settings but you are not allowed to change them unless you enter the
correct access code.
Access Timeout
The time in seconds the security access remains enabled after leaving the programming
mode. If you exit and go back into the program Mode within this time limit, the security
Access Code does not have to be re-entered. This timer starts when leaving the Program
Mode (by pressing Display etc.).
Access Code
A 4 digit code. You must know know this code to change secured Level 1 and Level 2 values.
Note: Please record your access code and store it in a safe place. If you cannot gain entry
into parameter values to change a protected parameter, please contact Baldor. Be
prepared to give the 5 digit code located on the lower right side of the Keypad Display
at the Enter Code prompt.
MOTOR DATA
Motor Voltage
The rated voltage of the motor (listed on the motor Nameplate). The value of this parameter
has no effect on the output voltage to the motor.
Motor Rated
Amps
The rated current of the motor (listed on the motor Nameplate). If the motor current exceeds this
value for a period of time, an Overcurrent fault will occur. If multiple motors are used on one
control, add the Motor Rated Amps for all motors and enter this value.
Motor Rated
Speed
The rated speed of the motor (listed on the motor Nameplate).
If Motor Rated SPD = 1750 RPM and Motor Rated Freq = 60 Hz,
the Keypad Display will show 1750 RPM at 60 Hz and 850 RPM at 30Hz.
Motor Rated Freq
The rated frequency of the motor (listed on the motor Nameplate).
Motor Mag Amps
The motor magnetizing current value (listed on the motor Nameplate) also called no load
current. If multiple motors are used on one control, add the Motor Mag Amps for all motors
and enter this value.
BRAKE ADJUST
Resistor Ohms
The dynamic braking resistor value in ohms. Refer to MN701 (dynamic braking manual) or
call Baldor for additional information. If dynamic braking is not installed, enter zero.
Resistor Watts
The dynamic braking resistor watts rating. Refer to dynamic braking manual or call Baldor
for additional information. If dynamic braking is not installed, enter zero.
DC Brake
Voltage
The amount of DC braking voltage applied to the motor windings during a stop command.
Increase this value for more braking torque during stops. The increased braking voltage
may cause the motor to overheat for applications that require frequent starts/stops. Be
careful in selecting this value.
The maximum DC Brake Voltage = (1.414)X(Max Output Volts).
Max Output Volts is a Level 1 V/HZ and Boost parameter value.
DC Brake FREQ
The output frequency (to the motor) at which dc injection braking will begin.
Brake on Stop
If set to ON, DC injection braking will begin when a stop command is issued. After a stop
command, the DC brake voltage will be applied to the motor windings when the output
frequency reaches the DC brake frequency.
Brake on
Reverse
If set to ON, DC injection braking will begin after a change-motor-rotation command is issued.
After a stop command, the DC brake voltage will be applied to the motor windings when the
output frequency reaches the DC brake frequency. Braking continues until the motor is
stopped. The motor will then accelerate in the opposite direction.
Stop Brake Time
The maximum number of seconds that DC injection brake voltage will be applied to the motor
windings after a stop command. After the time specified by this value, DC injection braking
is automatically turned off. If DC injection braking starts at a frequency less than the DC
brake frequency parameter, the stop brake time is calculated as follows:
Brake Time
+
Stop Brake Time X
Output Frequency at Braking
DC Brake Frequency
Brake on Start
If set to ON, turns DC injection braking ON for a period of time (Start Brake Time) when a run
command is issued. This ensures the motor is not rotating. Braking will automatically turn
off and the motor will accelerate at the end of the start brake time.
Start Brake Time
The amount of time that DC injection braking will be applied after a run command is issued.
This will only occur if brake on start is set to ON. Braking may cause the motor to overheat
for applications that require frequent starts/stops. Be careful in selecting this value. The
start brake time should be just long enough to ensure the motor shaft is not rotating when a
start command is issued.
