Siemens BACNET 125-699 - Manual (Page 12)

Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual
4 Siemens Building Technologies, Inc.
Controller LED Indicators
The controller has several Light Emitting Diode (LED) indicators. (Figure 1). Table 2 lists the
LED types and what they indicate.
Table 2. Controller LEDs.
LED Type Label
(if present)*
Indication
DO LED 1–LED 8 Indicates the ON/OFF status of the DO associated with it. A
glowing LED indicates that the DO is energized.
Receive RX Indicates , when flashing, that the controller is receiving
information from the field panel.
Transmit TX Indicates, when flashing, that the controller is transmitting
information to the field panel.
Basic Sanity
Test
BST Indicates, when flashing ON and OFF once per second, that
the controller is functioning properly.
* Some LED labels may be hidden by the controller cover.
Temperature Sensors
An electronic Room Temperature Sensor (RTS) or an optional auxiliary temperature sensor
may be used with the Siemens BACnet Heat Pump Controller—Multi-Stage.
Room Temperature Sensor
The controller room temperature sensor connects to the controller by means of a cable
preterminated at both ends with a 6-conductor RJ-11 plug-in connector. See Figure 1 for the
location of the RTS/Human-Machine lnterface (HMl) port.
Mixed Air Temperature Sensor
The mixed air temperature sensor is a 10K Ω thermistor that connects to the controller at Al
5.
For more information about Siemens temperature sensors, contact your local Siemens
Building Technologies representative.
Actuators
The actuator used with the Siemens BACnet Heat Pump Controller—Multi-Stage may be an
optional floating control or 0 to 10V spring return electronic damper motor that is powered
through the controller to position an outside air damper.
For more information about Siemens actuators, contact your local Siemens Building
Technologies representative.