SIEMENS STRI-M Addressable Interface Module Instruction Manual
- June 9, 2024
- SIEMENS
Table of Contents
SIEMENS STRI-M Addressable Interface Module
Installation Instructions Model STRI-M
Addressable Interface Module
The Model STRI-M Series Addressable Interface Module from Siemens Building
Technologies, Inc. interfaces direct shorting devices to the FDLC loop circuit
of the FS-250C System. The STRI-M can monitor a normally open or closed dry
contact and it can report the status of the contact.
PROGRAMMING
Refer to Figure 1 to locate the red and black FDLC loop circuit wires of
the STRI-M. Connect the Addressable Loop Driver circuit wires of the STRI-M to
the Model SDPU Programmer/Tester. Use the cable provided with the
Programmer/Tester and the 2 alligator clip to banana plug adapters provided.
CAUTION
To Prevent Damage To The SDPU:
DO NOT connect a STRI-M to the SDPU until all field wiring is removed from the
red and black FDLC loop circuit wires of the STRI-M. Connection from the SDPU
to the STRI-M is not polarity sensitive. Refer to Figure 3 for the proper
connections to the control panel. (Refer to Figure 2.) Follow the instructions
in the SDPU Programmer/Tester Manual (P/N 315-033260C) to program the desired
address into STRI-M. Record the device address on the label located on the
STRI-M. The STRI-M can now be installed and wired to the system.
NOTES:
- There can be any number of normally closed or normally open switches.
- The end of line resistor must be located at the last switch.
- Do not wire a normally closed switch across the end of line resistor.
- Only for use with status applications.
Figure 2
Wiring Switches
WIRING **
**
(Refer to Figure 3.) Refer to the wiring diagram and wire the addressable interface module accordingly.
NOTE
Recommended wire size:
- 18 AWG minimum
- 14 AWG maximum
Figure 3
Installing the STRI-M Wiring.
NOTES:
-
All supervised switches must be held closed and/or open for at least a quarter of a second to guarantee detection.
-
End of line device: 470 ohm, 1/4W resistor, P/N 140-820164. Use Model EL-33 with 470 ohm, 1/4W resistor.
-
STRI-M is polarity insensitive. Line 1 and Line 2 can be either line of the loop.
-
Addressable Loop Electrical ratings:
Voltage: 24 VDC pulsing, 31 VDC max.
Current maximum: 1.3mA during polling -
The supervised switches have the following ratings:
Voltage maximum: 6 VDC
Current maximum: 6mA during polling Contact resistance maximum: 10 ohms.
Maximum cable length: 200 feet (18 AWG)
Max line size: 14 AWG
Min line size: 18 AWG
CAUTION
Ground shield ONLY at the specified location on the Control Panel. EOL device must be a 470 ohm, 1/4 W resistor. When replacing an existing STRI on a device loop, you must also replace the EOL resistor if it is not 470 ohms, 1/4W. -
The green wire must be connected to earth ground.
- Use wire nuts to pass the shield wire through the electrical box with NO connection to the device green wire.
- Use shielded wire to connect the switch wiring.
- Tie the switch wiring shield to earth ground.
-
In supervisory: STRI-M draws 1.3mA
-
All circuits are power limited.
-
Positive and negative ground fault detected at <60K ohms for orange terminals.
MOUNTING **
**
The Model STRI-M mounts directly into a single gang switchbox (user supplied). Connect the appropriate wires using wire nuts. Tuck the STRI-M module inside the electrical box and dress the wiring as required. (See Figure 4.).
Siemens Building Technologies, Ltd. 2 Ken view Boulevard
Brampton, Ontario L6T 5E4 Canada.