Siemens 941 User Manual

Installation Instructions
Document No. 546-00085
December 8, 2011
CE Compliant Fume Hood Controller —
Application 941 and 942
Item No. 546-00085. Rev. CA Page 1 of 7
Figure 1. CE Compliant Fume Hood
Controller(Standard enclosure).
Figure 2. CE Compliant Fume Hood Controller
(Otherenclosure).
Control Applications
941 and 942
Product Description
The Fume Hood Controller Board (Figure 1 and
Figure 2) is the main termination board for the Fume
Hood Controller. The board comes with a ferrite filter
to suppress electrical emissions from the 8-
conductor cable. The ferrite filter must be installed to
meet FCC requirements and CE compliance
Product Numbers
546-00705 CE Compliant Fume Hood Controller
— Application 941 and 942 with cover
and mounting rail
546-00705E
CE Compliant Fume Hood Controller
— Application 941 and 942 with FHC
enclosure
NOTE:
Keep the controller board in its static
proof bag until you are ready to install.
Warning/Caution Notation
WARNING
Personal injury/loss of life may
occur if you do not follow the
procedures as specified.
CAUTION
Equipment damage or loss of data
may occur if you do not follow the
procedures as specified.
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.

Siemens 941 Specifications

General

Product Type Designation	SIMATIC S7-400
Number of DP Masters	1
Number of Integrated PROFINET Interfaces	0
Number of PROFIBUS DP Interfaces	1
Series	S7-400
Communication	PROFIBUS DP
Power Supply	24 V DC
Digital Inputs	N/A (Requires I/O Modules)
Digital Outputs	N/A (Requires I/O Modules)
Analog Inputs	N/A (Requires I/O Modules)
Analog Outputs	N/A (Requires I/O Modules)
Operating Temperature	0 to 60 °C

Summary

Product and Safety Information

Product Identification

Lists product numbers for CE Compliant Fume Hood Controllers for Applications 941 and 942.

Safety Warnings and Cautions

Highlights potential risks of personal injury, equipment damage, or data loss during installation.

Installation Preparation

Details expected installation time, required tools, materials, and prerequisites.

Installation Procedure

Controller Mounting and Grounding

Instructions for mounting the controller board and ensuring proper enclosure grounding for CE compliance.

Electrical Connections

Guidance on connecting 24 Vac power, FLN trunk wiring, and avoiding ground loops.

Point Wiring and System Integration

Details on connecting point wiring for applications and system components.

Ferrite Filter Installation

Procedure for installing a ferrite filter on cables to meet FCC and CE requirements.

Wiring Diagrams

Application 941 Wiring

Diagram showing controller connections for Application 941, including damper wiring.

Application 942 Wiring

Diagram illustrating controller connections for Application 942, including Venturi air valve wiring.

Sash Configuration Wiring

Single Vertical Sash Wiring

Wiring diagram for a single vertical sash configuration.

Horizontal Sash Configurations

Wiring diagrams for two and four horizontal sash configurations.

Mixed Sash Configurations

Wiring diagrams for two horizontal/one vertical and four horizontal/one vertical sash configurations.

Walk-in Sash Configuration

Walk-in Sash Wiring Diagram

Diagram for 2 vertical and up to 8 horizontal walk-in sash configurations.