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3 Installation – Panel Mount
12
CURRENT OUTPUT CONNECTIONS
The MOD53 can be supplied with up to 2 current outputs designated A and B. It is
shipped with links across the relevant current output pins if the option is fitted. If a
current output is required, remove the link and replace with a cable terminated by a
load resistance not exceeding 1000
Ω
. For best noise immunity, use a screened
twisted pair cable, with the screen connected to Earth at one end. Use a
sufficiently large cable to avoid a high resistance in the overall current loop.
When
either of the outputs is open circuit, in a dual output unit, the other will
indicate a fault by transmitting a 2mA signal. This will be accompanied by a
flashing error message on the Display (E41, see Appendix I)
SET POINT RELAY CONNECTIONS
The relay contacts are connected to the terminals only and are electrically isolated
from the instrument itself.
They must be connected in series with a 5 Amp
fuse.
MOD53
Load A
Neutral
Live
Neutral
Load B
5A
Figure 5 : Relay contact connection
A contact arc suppressor may be required to prevent excessive electrical noise,
depending upon the load. To switch more than 5 Amps will require a slave relay.
MOD53
Slave Relay
Neutral
Live
Figure 6 : Slave relay connection
Summary of Contents for MOD53
Page 1: ...MOD53 DISSOLVED OXYGEN MONITOR OPERATION GUIDE...
Page 26: ...4 Installation Surface Mount 25 Figure 24 ProcessProbeTM Cable...
Page 37: ...5 User Interface 36 This page intentionally blank...
Page 41: ...6 Main Display 40 This page intentionally blank...
Page 47: ...7 Parameters 46 This page intentionally blank...
Page 57: ...9 Current Output 56 This page intentionally blank...
Page 71: ...12 Pressure Input 70 This page intentionally blank...
Page 79: ...15 Fault Finding 78 This page intentionally blank...
Page 83: ...17 Guarantee and Service 82 This page intentionally blank...
Page 87: ...Appendix B Probe Parameters 86 This page intentionally blank...
Page 91: ...Appendix C Factory Default Setups 90 This page intentionally blank...
Page 95: ...Appendix D Customer Setup 94 This page intentionally blank...
Page 99: ...Appendix F Temperature Sensor Data 98 This page intentionally blank...
Page 101: ...Appendix G Pressure Conversions 100 This page intentionally blank...
Page 107: ...Appendix I Error Messages 106 This page intentionally blank...