Background Image
Table of Contents Table of Contents
Previous Page  103 / 182 Next Page
Information
Show Menu
Previous Page 103 / 182 Next Page
Page Background

ROC800-Series Instruction Manual

4-18

Input/Output Modules

Revised Jul-14

Table 4-2. RTD Wiring

Terminal 4-Wire RTD

3-Wire RTD

2-Wire RTD

REF

Red

Jumper to +

Jumper to +

+

Red

Red, Jumper to REF

Red, Jumper to REF

White

White

White, Jumper to RET

RET

White

White

Jumper to –

Note

:

The wire colors for the RTD being used may differ.

Caution

You can induce ground loops by tying commons from various modules

together.

4.10 Advanced Pulse Module (APM)

The APM provides advanced functionality commonly found in liquids

and gas measurement programs, including support for densitometer

inputs, detector inputs, pulse inputs, pulse frequencies, pulse outputs,

and proving. Field wiring (see

Figures 4-16

through

4-24

) and DIP

switch settings (see

Figure 4-25

and

Table 4-3

) provide this flexibility.

Note

:

The ROC800 can support up to 27 APMs.

You can connect densitometer inputs to any channel. However, for

current-modulated densitometers (such as the Micro Motion – formerly

Solartron – 7835/7845 densitometer), you can designate channel 3 as a

pulse input using a frequency input channel with hardware filtering.

You can also designate channel 4 as a pulse input or a solid state pulse

output.

Figure 4-16. Pulse Input Wiring on APM

Figure 4-17. Micro Motion (Solartron) 7835/7845

Wiring on APM

-

+

OPEN COLLECTOR

EXTERNALLY POWERED DEVICE

OR

OPEN DRAIN TYPE

OPEN COLLECTOR

ROC800 POWERED DEVICE

OR

OPEN DRAIN TYPE

-

+

+T

METER

- +

PI

COIL

PI

7835 / 7845

MICROMOTION

-

+

DENSITOMETER

PI

PI