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Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instruction Manual User Manual

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2.10.4 DUAL RELAY ITB SIGNAL CONNECTIONS

The Dual Relay ITB provides two interposing relays for use with the controller Contact Closure Out-
puts (DOs). Each relay can be wired directly to a controller standard rear terminal board (see Fig-
ure 2-24), to a Cord Set ITB (see Figure 2-34), or to a 6DI/4DO ITB (see Figure 2-35). The Dual
Relay ITB enhances DO performance by extending the switching tolerances to accommodate
larger loads. Reference Section 1, Specifications, for the contact ratings of the Dual Relay ITB.

2.10.5 6 DIGITAL INPUT/4 DIGITAL OUTPUT (6DI/4DO) ITB

As shown in Figure 2-35, the 6DI/4DO ITB adds the capability for additional Contact Closure Inputs
2 through 7 (DI2-7) and Contact Closure Outputs 2 through 5 (DO2-5). The four DO outputs can
be wired directly to remote devices or connected to a maximum of two Dual Relay ITBs. Refer-
ence Section 1, Specifications, for the contact ratings of the 6DI/4DO ITB and the Dual Relay ITB.
A controller can have either a 6DI/4DO ITB or a 16DI/DO ITB, but not both. The 6DI/4DO ITB is ca-
bled from ITB J5 to controller options connector board J5 as shown in Figures 2-8 and 2-9.

It should be noted that the controller model number must indicate this board is installed in the
unit; otherwise, it will not be identified as active hardware. The model number is configured in the
controller at the factory and it resides in two datapoint locations, A190 and A191. The correct con-
troller model numbers with a 6DI/4DO option installed are as follows: 53MC5000A2

♦♦♦

A etc.,

53MC5000A2

♦♦♦

B etc., and 53MC5000A2

♦♦♦

C etc., where

= other alphanumerics that de-

scribe the controller backpanel, chassis, and safety classification. (Section 3.12.2 describes how
to display a datapoint and Section 5, Table 5-15, System Module provides definitions for datapoints
A190 and A191. See also Section 1.3, Model Number Breakdown.)

2.10.6 16 DIGITAL INPUT/DIGITAL OUTPUT (16DI/DO) ITB

As shown in Figure 2-36, the 16DI/DO ITB has 16 sockets (M1 through M16) for optically isolated
solid state relays that provide the capability for optional DI connections 2 through 17 (DI2-17) or
DO connections 2 through 17 (DO2-17) or a mix of DI and DO connections 2 through 17 whereby
co-identity of a module socket number by a DI and a DO is prohibited. (If M1 is installed as DI2,
then DO2 can not exist; instead, an output module is installed in M2 and it is called DO3.) The
modules are 5 V and 24 V and may not be intermixed. A 16DI/DO ITB is
dedicated to all 5 V or 24 V modules. The solid state modules are of four types: AC input, AC out-
put, DC input, and DC output. Reference Section 1, Specifications, for module details. A control-
ler can have a 16DI/DO ITB or a 6DI/4DO ITB, but not both. The 16DI/DO ITB is cabled from ITB
J5 to controller options connector board J5 as shown in Figures 2-8 and 2-9.

53MC5000 Process Control Station

2-36