PLATINUM
TM
Series User’s Guide
11
Introduction
Caution:
Do not connect power to your device until you have completed all input
and output connections. Failure to do so may result in injury!
Use copper conductors only
for power connections
1.4.2
Connecting Power
Connect the main power connections to pins 7 and 8 of the 8-pin power / output connector as shown in
Figure 1.1.
Figure 1.3 – Main Power Connections
For the low-voltage power option, maintain the same degree of protection as the standard high-
voltage input power units (90–240 Vac) by using a Safety Agency Approved DC or AC source with
the same Overvoltage Category and pollution degree as the standard AC unit (90–240 Vac).
The Safety European Standard EN61010-1 for measurement, control, and laboratory equipment
requires that fuses must be specified based on IEC127. This standard specifies the letter code “T”
for a Time-lag fuse.
1.4.3
Connecting Inputs
The 10-pin input connector assignments are summarized in Table 1.0. Table 1.1 summarizes the
universal input pin assignments for different sensor inputs. All sensor selections are firmware-controlled
(see
4.1 Input Configuration (INIt > INPt)
) and no jumper settings are required when switching from one
type of sensor to another. Figure 1.2 provides more detail for connecting RTD sensors. Figure 1.3 shows
the connection scheme for process current input with either internal or external excitation.
Pin No.
Code
Description
1
ARTN
Analog return signal (analog ground) for sensors and remote Setpoint
2
AIN+
Analog positive input
3
AIN-
Analog negative input
4
APWR
Analog power currently only used for 4-wire RTDs
5
AUX
Auxiliary analog input for remote Setpoint
6
EXCT
Excitation voltage output referenced to ISO GND
7
DIN
Digital input signal (latch reset, etc), Positive at > 2.5V, ref. to ISO GND
8
ISO GND Isolated ground for serial communications, excitation, and digital input
9
RX/A
Serial communications receive
10
TX/B
Serial communications transmit
Table 1.1 – 10-Pin Input Connector Wiring Summary
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