Operating Instructions

Troubleshooting
Conventional Bypass Diagnostic Board
44
Siemens Industry, Inc. BT300 Bypass Operator's Manual DPD01391
Building Technologies 2017-09-28
Table 6: Expected Voltages, Conventional Bypass Diagnostic Test Points.
Test
Point
Reference Drive Off Bypass Essential Services Description
TP1 TP8 0 Vac 0 Vac 115 Vac 115 Vac Point between ESR-B terminal 4
and M2A-B terminal 3.
TP2 TP8 0 Vac 0 Vac 115 Vac 115 Vac M1 coil power.
TP3 TP8 0 Vac 0 Vac 115 Vac 115 Vac M1 coil power.
TP4 TP8 115 Vac 0 Vac 0 Vac 0 Vac Point between ESR-C terminal 7
and M1A-B terminal 3.
TP5 TP8 115 Vac 0 Vac 0 Vac 0 Vac M2 coil power.
TP6 TP8 115 Vac 0 Vac 0 Vac 0 Vac M2 coil power.
TP7 TP8 115 Vac 0 Vac 0 Vac 0 Vac Point between BOD switch ‘Drive’
position and ESR-C terminal 6.
TP8 TP8 0 Vac 0 Vac 0 Vac 0 Vac Vac Neutral.
TP9 TP8 0 Vac 0 Vac 115 Vac 115 Vac (REM)
0 Vac (LOC)
Point between BOD switch
‘Bypass’ position and LOC/REM
jumper.
TP10 TP8 0 Vac 0 Vac 115 Vac (REM)
0 Vac (LOC)
0 Vac Point between REM jumper and
RR-B terminal 3.
TP11 TP8 115 Vac (w/ M3)
0 Vac (No M3)
115 Vac (Test)
0 Vac (Off)
115 Vac (Test)
0 Vac (Off)
115 Vac (Test)
0 Vac (Off)
Point between Test Switch ‘Off’
position and M3 coil (M3 coil
power).
TP12 TP15 24 Vdc 24 Vdc 24 Vdc 24 Vdc 24 Vdc from drive standard I/O
terminal 6.
TP13 TP15 24 Vdc (On)
0 Vdc (Off)
0 Vdc 0 Vdc 0 Vdc Drive standard I/O terminal 9 (DI2
- Drive Contactor (M2) Interlock).
TP14 TP15 24 Vdc (On)
0 Vdc (Off)
0 Vdc 0 Vdc 0 Vdc Drive standard I/O terminal 8 (DI1
- I/O Start) DI2 must be ON before
DI1 can be ON.
TP15 TP15 0 Vdc 0 Vdc 0 Vdc 0 Vdc Vdc Common from drive standard
I/O terminal 13.