Micromod RetroPAK: MOD 30 Installation Manual - Manual (Page 15)

MOD 30ML Replacement for MOD 30 Instruments
REPLACEMENT CONSIDERATIONS
SECTION 2
REPLACEMENT CONSIDERATIONS
2.1 GENERAL
This section provides information for planning the replacement of installed MOD 30
instruments using the MOD 30ML Replacement Instrument. The principal factors to be
considered when making a replacement are as follows:
• The replacement applies to the instruments only. Most MOD 30 associated equipment
such as termination panels, field input boards, power supplies, etc. are required for
operation of the replacement instrument.
• A single MOD 30ML instrument (Catalog No. 1800R) is used to replace any MOD 30
Controller, Controller XL, Indicator, Math Unit or Sequence and Logic Unit.
• Two forms of the replacement instrument are available:
- Catalog No. 1800RZ_ _ _1_A is supplied without I/O modules. The user must
specify the modules required for the specific application, and install the modules
as part of the replacement procedure.
- Catalog No. 1800RZ_ _ _2_A is supplied with factory installed I/O modules to
fully match the I/O complement of the 1700R and 1701R controllers.
• The maximum possible I/O count for a MOD 30 instrument using both cables (i.e., a
1700N Math Unit) is 22 points. The maximum possible I/O count for the MOD 30ML is
15 points of which 11 points are provided by plug-in I/O modules. The modular nature
of these 11 points provides I/O flexibility to cover many replacement requirements.
• Some I/O module locations in the MOD 30ML can accept either an analog or digital
signal. When these locations are used for digital inputs, the corresponding analog input
negative terminal must be grounded to the power supply negative at the termination
panel (specific connection instructions are provided in Section 3).
• The output holder used with the MOD 30 controllers is not supported by the
replacement instrument.
• The replacement instrument is an indicating device; it cannot replace the MOD 30
recorder.
• If it is necessary to obtain both ICN communication and RS-232 communication for
data base configuration via the port in the front panel, a 2030N ICN module must be
installed.
• After completing installation of a replacement instrument, its data base must be
configured to match the functional requirements of the application. Configuration
information is provided in other documents; see Section 1.1.2.
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