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MA7200 PLUS Operating Manual
TECO – Westinghouse Motor Company Sn-23
Cont
. – Sn-28 Parameter Details
.
Fig. 9.2.3.9 Motor Overload Protection Curve (Cn-09=100%)
Sn-24
External Analog Input Frequency Characteristics Command Selection (0 -3)
Sn-24=0: Frequency command is from input VIN: 0 - 10V
1: Frequency command is from input AIN: 4 - 20mA
2: Frequency command is the sum of inputs (VIN + AIN). VIN: 0 - 10V and AIN: 4 - 20mA.
3: Frequency command is the difference of inputs (VIN - AIN). 0 - 10V and AIN: 4 - 20mA. If the value
(VIN - AIN) is negative, the reference command will be 0.
For inverters rated 230V: 3-40HP and 460V: 3-75HP, VIN accepts an input of ±10V if parameters Sn-68=–1––
and Sn-05=1. Set Sn-24 to select the main frequency as follows:
Sn-24= 0: The frequency command is controlled by VIN (-10 - +10V).
(Corresponding command frequency: -10V - +10V
→
Reverse frequency 100% -
forward frequency 100%)
1: The frequency command in controlled by AIN (4 - 20mA).
(The status of forward/ reverse is set by the user)
2: The frequency command is controlled by the sum of VIN and AIN.
3: The frequency command is controlled by the difference of VIN and AIN.
(When (VIN + AIN) < 0 or (VIN - AIN) < 0, main frequency switched to reverse status. When Sn-24 = 0, 2 or 3,
forward or reverse is controlled by main the frequency command polarity.)
Sn-25
Multi-Function Input Terminal
Function Selection
Sn-26
Multi-Function Input Terminal
Function Selection
Sn-27
Multi-Function Input Terminal
Function Selection
Sn-28
Multi-Function Input Terminal
Function Selection
The settings and functions for the multi-function input are listed in Table 9.2.3.3.
Table 9.2.3.3 Multi-function Input Settings
Setting
Function
LCD Display
Description
00
Forward / Reverse
command
3_Wire Run
3-wire operation mode
01
2-wire key-pressing
input stop command
2_Wire Stop Key
2-wire operation mode
02
Multi-speed command 1
Multi-Fun. Command 1
Multi-speed frequency command selection
03
Multi-speed command 2
Multi-Fun. Command 2
04
Multi-speed command 3
Multi-Fun. Command 3
05
Multi-speed command 4
Multi-Fun. Command 4
06
Jog
Jog Command
ON: Select jog frequency
07
Acc / Dec time switch
command
Acc.& Dec. Switch
OFF: The first stage Acc / Dec time (Bn-01, Bn-02),
ON: The second stage Acc / Dec time (Bn-03, Bn-04),
08
External base-block
command (N.O.
contact)
Ext.B.B. NO_Cont
ON: inverter output baseblock
Cont.