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Operating and Maintenance Instructions
3.0
Overview
3.1 Specification
Enclosure Dimensions See Appendix A – Physical Details
Operating Environment CN1116 is -20°C to +60°C, 90%RH at 40°C max.
EMC Compliance BS EN61000-6-3 (emissions)
* Patent GB 2 431 303
3.2 Installation
Avoid exposure to vibration, high temperatures. Control of exposure to water and dust varies with each design. The
unit shall be installed according to relevant safety guidelines and requirements. Attention should be paid to local
regulations and guidance.
3.3 Hot plugging
Hot plugging the MDC is permissible, however, if a new or replacement MDC is not at factory default settings, it will
need to be reset to such. Please see Section 7.0 Replacing a MDC unit for more details.
3.4 RS485 wiring installation
It is recommended to use shielded RS485 cable separated from mains supply wiring. For reliable system operation
the RS485 wiring should be installed in accordance with standard industry good practice. Use a "Daisy Chain" linear
cable layout avoiding "Star" layout or "Stubs". We recommend the MDC to be at one end of the RS485 network. It
has a built-in 560Ω termination resistor on its RS485 Master Port and therefore another 560Ω termination resistor
should be added at the other end of the network cable as shown in Figure 1 below:
In case the MDC is in the middle of the network, the built-in termination resistor must be taken out of the circuit by
removing the jumper bar located on the PCB. Please note that in this case, two resistors of the same value are
required at each end of the network.
210-OMI14229-Iss2
© ebm-papst UK Ltd 2018
Product Modbus Display & Control - CN1116
Supply Voltage Two sets of connections are provided for either:
•
10 VDC to 24VDC from an optional external PSU or
•
10 VDC sourced from connection to the fan PSU*
(note that fan PSU must be the >10 mA version)
Reverse polarity protected
Supply Current 10mA (low LDC backlight) – 40mA (full LCD backlight)
Enclosure CN1116 – wall mount
Weight CN1116 – 204 g
BS EN61000-6-2 (immunity)
Table 3 - Specification
Figure 1 - Schematic of RS485 installation
Operation & Maintenance Instructions
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
sales@uk.ebmpapst.com
560Ω
Page 7 of 45
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