Siemens SED2 Service Manual download pdf (Page 96)

SED2 Operation & Maintenance Manual

88 Siemens Building Technologies, Inc.

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

AI7 OUTPUT VOLTS 0 V No Override 0 to 32767 r0025

AI8 ANALOG IN 1 0 PCT No Override -300.0 to 300.0 r0754/0

AI9 ANALOG IN 2 0 PCT No Override -300.0 to 300.0 r0754/1

AI10 PI FEEDBACK 0 PCT No Override -100.0 to 100.0 r2266

AI11 ANALOG OUT 1 0 PCT No Override -100.0 to 100.0 r0774/0

AI12 ANALOG OUT 2 0 PCT No Override -100.0 to 100.0 r0774/1

1 2 ... 91 92 93 94 95 96 97 98 99 100 101 ... 153 154

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Siemens SED2 Service Manual Page 96