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540-219
Installations Instructions
Rev. 2, 1/99
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3. Mount the enclosure on the screws and tighten
them down with either the drill or hex nut driver.
4. Remove the appropriate knockouts.
5. Place the ESD wrist strap on your wrist and
attach it to a good earth ground.
6. Connect the Local Area Network (LAN) trunk
(Figure 4). Run the wiring through knockout.
C C C C A A A A U U U U T T T T I I I I O O O O N N N N : : : :
Do not connect an earth ground to the
Shield (S) terminal.
7. Connect the point wiring for the appropriate
application. Refer to Figure 6. Refer to Table 1
for application descriptions. Run the wiring
through knockout.
C C C C A A A A U U U U T T T T I I I I O O O O N N N N : : : :
The Controller's Digital Outputs (DOs)
control 24 Vac loads only. The
maximum rating is 12 VA for each DO.
For higher VA requirements, 110 or
220 Vac requirements, separate
transformers used to power the load,
or DC power requirements, use an
interposing 220 V 4-relay module
(TEC Relay Module P/N 540-147).
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N N N N O O O O T T T T E E E E : : : : Each DO provides a Normally Open (NO)
and a Common (C) terminal. Terminate both
connections of a 24 Vac load directly to the
controller board.
N N N N O O O O T T T T E E E E : : : : The 24 Vac "H" terminal is switched
through a TRIAC to the NO terminations when
the associated DO is energized.
8. If using a pressure mode switch, then follow the
instructions (540-719) included with the switch.
9. After the pressure mode switch is installed, wire
the switch to DO8 and AI3 as described in the
instructions.
10. Plug the Room Temperature Sensor cable into
the RTS port on the controller board. Refer to
Figure 1. Run the cable through knockout.
11. Connect the power trunk as shown in Figure 5.
DO NOT apply power to the controller. Run the
wiring through knockout.
12. Replace the enclosure cover and tighten the
cover screws.
Siemens Building Technologies, Inc.
Landis Division
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