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ROC364 Instruction Manual

6-8 Rev 5/00

SELF-POWERED

DISCRETE DEVICE

DOC4005A-R32

6.4.4 Discrete Output Channels

The discrete output channels are normally-open, single-pole, single-throw (SPST) relays. The relay

contacts have a 5 amp rating. An LED lights next to the terminal block when the relay coil is

energized. The channels are configured as Point Number B11 to Point Number B16. They can be

software-configured as latched outputs, toggled outputs, or momentary timed outputs.

Use the first and second terminal position for wiring; the third position has no conection. Figure

Section: 6-7 shows a typical discrete output wiring diagram.

NOTE

The Discrete Output channels are designed to operate only with discrete

devices having their own power source. The channels will be inoperative with

non-powered devices.

Figure Section: 6-7. Discrete Output Wiring

6.4.5 Pulse Input Channels

Pulse input (PI) channels are used for counting pulses from pulse-generating devices. Each pulse input

is optically isolated from the board electronics and sources power from the +T line of the MCU. LED

indicators monitor the status of each channel.

The I/O Card pulse input circuits are similar to the discrete inputs. The difference is that the pulse input

signal is routed to a pulse accumulator, where the pulses are counted and accumulated.

The pulse inputs provided on the ROC364 I/O Card are configured as Point Numbers A13 through A16.

The pulse inputs can operate at up to 10 kHz.

Each PI channel uses two field terminals, located at the second and third positions of the terminal block.

One terminal is a positive source voltage; the other is the signal return. The terminals are designated as

follows:

CONTROL

N.0.

COM

B11 to B16

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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Emerson ROC364 Bedienerhandbuch Seite 12