Super Systems 7SL User Manual

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Source Impedance

100

Ω

maximum for TC/mV input

Less than 20

Ω

per wire for RTD input

Input Impedance

Greater than 1 M

Ω

for TC/mV input

Greater than 400 K

Ω

for 5V to 10V input

range
Less than 5

Ω

for mA input

Cold Junction

Automatic compensation from 0 to 50 °C

Digital Input Input from dry contact (voltage free) to

restart process (optional)

Control OUT 1

Relay (form C) 3 Amp @ 250 Vac resistive
load (with varistor on contacts)
(Relay operates in failsafe mode)

Limit Type

High limit (for heating process)
Low limit (for cooling process)
High/Low limit (for special process)

Acknowledgment Mode

To restart the process, two conditions
must apply
a) The process returns within setpoint
b) The operator has acknowledged the
process (from keyboard, digital input or
serial link)
The “a” and “b” sequence may or may not
matter depending on C2 (see C2)

Power-Up Mode

Automatic or Manual restart. When in
automatic restart the control output is guar-
anteed OFF for 1 second.

Setpoint Threshold

Span limits

Threshold hysteresis

From 0.1 to 10.0% of span value or 1 LSD
(whichever is greater)

OUT 2

Relay (form A) 2 Amp @ 250 Vac resistive
load. OUT 2 is used as alarm output
(optional)

Alarm Function

Process alarm
Deviation alarm
Band alarm

Type of Alarm

High/Low (Outside/Inside if band alarm)
Direct/Reverse
Automatic/Manual reset
Standby sequence/No standby sequence

Alarm Threshold

Span limits for process alarm
From 0 to 500 digits for band alarm
From -500 to 500 digits for deviation alarm

Alarm Hysteresis

From 0.1 to 10.0% of span value or 1 LSD
(whichever is greater)

Serial Interface

RS-485 Opto-isolated (optional)

Protocol Type

Modbus/Jbus (RTU mode)

Device Address

From 1 to 255. NOTE: The interface can
support up to 31 devices

Baud Rate

600 up to 19200 baud

Format

1 start bit
8 bit with/without parity
1 stop bit

Parity

Even/Odd

Watch dog

Hw/Sw is provided for automatic restart

Protection

Internal dip switch for calibration and con-
figuration parameter protection.

7sl-5-00.p65

9/17/02, 2:43 PM