Limit Supervisions (M3.8) - Siemens bt300 Operator's Manual

Chapter 4 - Parameters and Menu Structure
Parameters (M3)

Limit supervisions (M3.8)

Two signal values can be selected for supervision. High or low limits are supervised.
The limit supervisions settings are presented in the following table:
Structure Parameter
P3.8.1 Superv1 Item
P3.8.2 Superv1 Mode
P3.8.3 Superv1 Limit
P3.8.4 Superv1 Hyst
70 | 180
Siemens Industry, Inc.
Building Technologies
NOTE:
The drive will still ramp through these speeds, but will not control within this range.
The speed at which the drive ramps through this range can be changed by the Ramp
Time Factor (P3.7.7) to make it faster.
For example. If Acceleration Time 1 (P3.4.2) is set to a value of 120, Minimum
Frequency (P3.3.1) is set to a value of 0, and Maximum Frequency (P3.3.2) is set to a
value of 60; then it takes 2 seconds to speed up 1 hertz. If Ramp Time Factor
(P3.7.7) is set to a value of 2, then it takes 1 second to speed up 1 hertz when within
the range as defined by Prohibited Frequency Range 1 Low Limit (P3.7.1) and
Prohibited Frequency Range 1 High Limit (P3.7.2)
Table 45: Limit Supervisions Settings.
Unit Min Max
Output Analog Input 2
Frequency
Not Used High Limit
Varies -200 200
Varies -200 200
Siemens BT300 HVAC Drive
Default ID
Output Frequency 1431 Defines the drive data to supervise for
Superv1 Mode (P3.8.2) in accordance
with the Superv1 Limit (P3.8.3) with
deadband defined with Superv1 Hyst
(P3.8.4)
0 = Output Frequency
1 = Frequency Reference
2 = Motor Current
3 = Motor Torque
4 = Motor Power
5 = DC-Link Voltage
6 = Analog Input 1
7 = Analog Input 2
NOTE:
in accordance with this supervised item.
Set Relay Output Function to a value of
Superv1 Lmt.
Not Used 1432 Defines the type of supervision of the
Superv1 Item (P3.8.1) in accordance
with the Superv1 Limit (P3.8.3) with
deadband defined with Superv1 Hyst
(P3.8.4)
0 = Not used
1 = Low Limit Supervision
2 = High Limit Supervision
25 1433 Defines the limit that Superv1 Item
(P3.8.1) is compared to, which
determines if Superv1 Mode (P3.8.2)
has occurred. Unit of measure displays
automatically.
5 1434 Defines the deadband of Superv1 Item
(P3.8.1).
Description
A relay output can be triggered
DPD01809
2016-06-07