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Setting 7C/7D: Short Circuit Braking (N.O./N.C.) (PM OLV only)
An input programmed for this function can be used to activate Short Circuit Braking in Open Loop Vector Control for PM
motors. By linking all three phases of a PM motor it creates a braking torque in a rotating motor and can be used to stop
a rotating motor or prevent a motor from coasting by external forces (like windmill effect in fan applications etc.).
Description
Digital Inputs
Setting 7C (N.O.)
Setting 7D (N.C.)
Normal operation
Open
Closed
Short-Circuit Braking
Closed
Open
Setting 7E: Forward Reverse Detection (V/f Control with Simple PG Feedback)
When a digital input is programmed for this function, the input determines the direction of the speed feedback signal for
V/f Control with PG feedback. If the input is open, the speed feedback signal is considered to be forward, if the input is
closed, it is considered to be in reverse.
Refer to C5: Automatic Speed Regulator (ASR) on page 129
for details.
Setting 7F: Bi-Directional PID Output Selection
If PID output to bi-directional output conversion is enabled in parameter d4-11, a digital input programmed for 7F can be
used to switch between normal output or bi-directional output.
If the digital input is open, the PID output builds the output frequency reference. If the input is closed, the PID output is
converted to bi-directional output frequency reference.
Refer to d4-11: Bi-Directional Output Selection on page 142
.
Setting 90 to 96: FBDs Digital Input 1 to 6
These settings are for digital inputs functions used by FBDs. Normally there is no need to change or apply these settings.
Setting 9F: FBDs Function Disable
This function is used to enable or disable a FBDs program in the drive. An input programmed for this function is effective
only if A1-07 = 2.
Status
Description
Open
FBDs enabled
Closed
FBDs disabled
u
H2: Multi-Function Output
n
H2-01 to H2-03: Terminal MA/MB/MC, P1/PC and P2/PC Function Selection
The drive has three multi-function output terminals. Set parameters H2-01 to H2-03 between 0 and 192 to assign functions
to these terminals. Default values are listed in the following table.
No.
Parameter Name
Setting Range
Default
H2-01
Terminal MA, MB and MC Function Selection (relay)
0 to 192
E: Fault
H2-02
Terminal P1 Function Selection (open-collector)
0 to 192
0: During Run
H2-03
Terminal P2 Function Selection (open-collector)
0 to 192
2: Speed Agree 1
Note:
If not using an input terminal or if using it in the through-mode, be sure to set that terminal to “F”.
Table 5.27 Multi-Function Output Terminal Settings
Setting
Function
Page
Setting
Function
Page
0
During Run
170
19
Torque Detection 2 (N.C.)
173
1
Zero Speed
170
1A
During Reverse Operation
175
2
Speed Agree 1
170
1B
During Baseblock (N.C.)
176
3
User Set Speed Agree 1
171
1C
Motor 2 Selection
176
4
Frequency Detection 1
171
1E
Restart Enabled
176
5
Frequency Detection 2
172
1F
Motor Overload Alarm (oL1)
176
6
Drive Ready
172
20
Drive Overheat Pre alarm (oH)
176
7
DC Bus Undervoltage
172
22
Mechanical Weakening
176
8
During Baseblock (N.O.)
172
30
During Torque Limit
176
9
Frequency Reference Source
173
37
During Frequency Output
176
A
Run Command Source
173
38
Drive Enable
176
B
Torque Detection 1 (N.O.)
173
39
Watt Hour Pulse Output
176
C
Frequency Reference Loss
173
3C
LOCAL/REMOTE Status
177
D
Braking Resistor Fault
173
3D
During Speed Search
177
E
Fault
173
3E
PID Feedback Low
177
F
Not used/Through Mode
173
3F
PID Feedback High
177
10
Alarm
173
4A
During KEB Operation
177
11
Reset Command Active
173
4B
During Short-Circuit Braking
177
12
Timer Output
173
4C
During Fast-stop
177
13
Speed Agree 2
173
4D
oH Pre-Alarm Time Limit
177
5.7 H: Terminal Functions
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
169
5
Parameter Details
7/16/2008-13:23