Series-C I/O modules are constructed to support normal field failures, wiring errors and conditions such as a shorted wire. All Series-C IOTAs contain at least one fuse that provides protection for catastrophic errors in the IOTA, IOM and other elements of the Series-C system. In normal operation as well as many abnormal operations, the fuse element should not blow.
CMF-300-6 Installation
6.4.1 Cabinet Installation
This type of module is contained in either a BB-2 cabinet. The BB-2 can accommodate up to 2 modules and the BB-6, which requires the
CH-6, can accommodate up to 6 modules.
See the Installation Instructions provided with module for proper installation into cabinet.
6.4.2 Setting an SLC address for an CMF-300-6 Module
In “Class A” operation each CMF-300-6 module can be set to one of 154 base addresses (01-154). The remaining module points are
automatically assigned to the next five higher SLC addresses. For example, if the base address is set to 28, the next five module points
will be addressed to 29, 30, 31, 32 and 33.
In “Class A” operation alternate module points are paired together, resulting in a total of three module points. For example, if the base
address is set to 28, then 30 and 32 will be automatically assigned to the remaining module points and 29, 31 and 33 are available to be
used for other modules on the SLC.
DO NOT set the lowest address above 154 (45 for the MS-9050UD or ES-50X, 94 for the MS-9200, MS-9200UD, MS-9200UDLS, or
ES-200X), as the other module points will be assigned to nonexistent addresses.
To set an SLC address, use a common screwdriver to adjust the rotary switches on the module to the desired address. See Figure 6.4 on
page 47.
6.4.3 Setting NACs as Class B or Class A
To use this module for Class B operation ascertain that a small shunt is installed on the “A/B SELECT” set of pins. (As shipped).
To use this module for Class A operation remove the small shunt from the “A/B SELECT” set of pins. See drawing below and Figure 6.4
on page 47.
6.4.4 Disabling Unused Module Addresses
A shunt is used, in conjunction with a pin block, to disable a maximum of three (3) unused module
addresses. If two module addresses are disabled, the lowest four addresses will be functional, while the highest two will be disabled. For example, if the shunt is placed on ‘DISABLE 2’ and the base address is set to
28, the module addresses will be assigned to 28, 29, 30 and 31.
In Class A operation, placing a small shunt on ‘DISABLE 3’ will disable all three addresses. Placing it on
‘DISABLE 2’ will disable two out of three addresses.
To disable addresses, securely place one of the supplied small shunts onto the desired set of pins. See drawing and Figure 6.4 on page 47.
6.4.5 Short Circuit Protection
Protection is disabled for each module address when there is a large shunt installed on the corresponding pins of the pin block (as
shipped, all six addresses are disabled).
When enabled, the module will not switch power supply if a short circuit condition exists on a NAC.
To enable “Short Circuit Protection” for an address, remove the large shunt from the corresponding pins of the pin block. See Figure 6.4
on page 47. Place unused shunts on single pin to store on board for future use.
6.4.6 Features Not Supported
The “Synchronization” and “Power Supply Monitoring” features are not supported at this time.
