Instruction manual

Model 5100-99-IT 4-20 mA Transmitter

Page: 2

1.3.2

e additional terminal connectors to enable the user to connect In/Out terminations of

1.3.3

3 (3-wire) or Type 4 (4-wire) circuit as described by ANSI/ISA-

1.3.4

is only resets local alarms, not Sentry alarms. This

operated in a supervised mode that both the switch and resistor

Figure 3-7.

1.3.5

VAC, 8 Amps for the High

ys, it will include Terminal P4 on the interface board

elay output connections are on P4.

1.3.6

of comprised of the following three primary components:

1.3.7

viewing window. The design of the enclosures allows 3-way mounting

hoices as shown in figure 1-3.

MODBUS OPERATION

An RS-485 Modbus RTU serial interface allows direct connection to standard PLCs and DCSs. The

Transmitter Address Switch (section 3.5) allows the user to select up to 16 different Modbus addresses.

Also, an additional 238 Modbus addresses (for a total of 254 different Modbus Addresses) are available

via menu selection. Figure 3-6 in this manual provides the wiring terminations for Modbus connections. The

5100-XX-IT provides th

a RS-485 connection.

ANALOG OPERATION

The 4-20 mA interface allows direct connection to standard analog controllers or PLCs. The 5100-XX-IT 4-

20 mA connection can be wired as a Type

50.00.01-1975 Standard (see figure 3-5).

REMOTE ALARM RESET (DIGITAL INPUT) (Figure 3-7)

An input is available for connection of remote alarm reset/acknowledge. Figure 3-7 provides the wiring

termination for connecting the remote alarm reset. Th

input can be wired as supervised or non-supervised.

Note that when the Remote Alarm Reset is

must be present as outlined in

OPTIONAL INTEGRAL RELAYS

The optional relays are integral to the transmitter and are rated as SPDT, 250

Alarm and Low Alarm relays and SPDT, 250 VAC, 2 Amp for the Trouble relay.

If the transmitter is provided with the optional rela

(Figure 3-2). R

MECHANICAL

The transmitter

ENCLOSURE

Standard on the 5100-99-IT-AL is an explosion-proof, rain-tight cast aluminum electrical housing (Figure 1-

1) with three ¾” FNPT conduit hubs. The 5100-99-IT-SS (Figure 1-2) has a 316 Stainless Steel enclosure.

oth enclosure covers have a B