Installation Instructions

Document No. 546-14403
Installation Instructions
December 8, 2011
Page 2 of 4 Siemens Industry, Inc.
Expected Installation Times
23 minutes.
Required Tools and Materials
• Smallflat-blade screwdriver
Prerequisites
• Fume Hood Controller Enclosure is mounted
and wiring has been roughed-in.
• Operator Display Panel is installed and
cable pulled to location of controller.
Instructions
1. If the Fume Hood Controller will be used with a
field panel, then disconnect the Field Level
Network (FLN) trunk from the field panel.
2. Place the ESD wrist strap on your wrist and
attach it to a good earth ground.
3. Carefully remove the controller board from the
anti-static bag.
4. To mount the controller, do one of the following:
• Center the controller board over the
mounting posts in the bottom of the
controller enclosure (Figure 1). Insert the
corner holes of the board onto the mounting
posts. Press firmly on the board to snap it
securely into place. Repeat for all
controllers.
• Secure the mounting rail inside the
enclosure at the controller’s desired
location and snap it into place on the
mounting rail (Figure 2). Repeat for all
controllers.
5. After installing all controller boards, verify that
power is OFF. Connect a certified 24 Vac Class
II power source to the Fume Hood Controller,
see Figure 3.
NOTE:
To meet CE requirements, the
enclosuremust be grounded.
Figure 3. Power Trunk Wiring.
6. Connect the FLN trunk wiring as shown in
Figure 4.
7. After all controllers are connected to the FLN
reconnect the FLN trunk to the field panel.
CAUTION
Do not connect an earth ground
to the FLN trunk shield terminal.
The earth ground should be
connected only at the field panel
to prevent ground loop currents.
Figure 4. FLN Trunk Wiring.
8. Terminate both connections of a 24 Vac load
directly to the controller board. The 24 Vac “H”
terminal is switched through a triac to the NO
terminations when the associated DO is
energized.
CAUTION
The Fume Hood Controller DOs
control 24 Vac loads only. The
maximum rating is 12 VA for
each DO. For higher ratings an
interposing relay must be used.
9. Follow the instructions in Figure 5.
CAUTION
Ferrite filter(s) must be installed
on the Operator Display Panel
(ODP) cable. If not, the controller
is not FCC and CE compliant.