Siemens 125-5033

Product Overview
Siemens Building Technologies, Inc. 3
Hardware Inputs
Analog
• Differential pressure transmitter
Digital
• Operator Display Panel (ODP)
• ATTN.UNATTN (through DI1)
• OCC.UNOCC (through DI1)
Hardware Outputs
Analog
• AO-E/AO-P module (Floating Control)
• Operator Display Panel (ODP)
• AO2 (Flow Signal, 1 to 10 Vdc)
Digital
• FLN communications trunk
• DO3 (24 Vac, Alarm/Hi.Low Output)
Power Wiring
The controller is powered by 24 Vac. Power wiring connects to the three screw terminals on
the controller labeled “C” (Common), “H” (Hot) and “E” (Ground) on the terminal block labeled
“TB1”. Earth ground connection is required (Figure 2).
Communication Wiring
The controller connects to the field panel by means of a Field Level Network (FLN) trunk.
Communication wiring connects to the three screw terminals on the controller labeled “+”
(positive), “-“ (negative), and “S” (Shield) (Figure 3).