Operating Instructions

Chapter 9 – SED2 Communications
Siemens Building Technologies, Inc. 99
Table 9. Point Cross Reference to the SED2 Drive.
Point Number Descriptor Parameter
96 WARNING r0052 bit 7
97 LAST WARNING r2110 (0)
N2 Bus Connections
The connections for the N2 network (Table 10) are located on the terminal block.
Table 10. N2 Bus Connections.
Terminal Pin No. Terminal Name N2 Bus Connection
29 P+ N2+
30 N- N2-
28 Iso 0V Ref
N2 Implementation Notes
1. Overriding of AI and BI points is not supported. Overrides of AI and BI points are
acknowledged, but the Override Value is ignored and the Override Flag is not set.
2. Out of range values on Overrides of AO, ADI, and ADF points are NAK’d.
3. Certain ADI and ADF points contain read-only values and cannot be overridden. Table 11
lists these particular points. Overrides of these ADI and ADF points are acknowledged,
but the Override Value is ignored and the Override Flag is not set.
4. When an Override is released, the point value remains at the current Override value and
does not revert back to its value prior to the Override. This pertains to all point types.
N2 Point Map
Table 11. N2 Point Map.
On Text Off
Text
Point
Number
Name Default
Value
Units Notes
Or Range
SED2 Ref.
AI1 FREQ OUTPUT 0 HZ No Override -650.00 to 650.00 r0024
AI2 SPEED 0 RPM No Override -16250 to 16250 r0022
AI3 CURRENT 0 A No Override 0 to 1638.35 r0027
AI4 TORQUE 0 NM No Override -3250.0 to 3250.0 r0031
AI5 DC BUS VOLTS 0 V No Override 0 to 32767 r0026
AI6 REFERENCE 0 HZ No Override -650.00 to 650.00 r0020