The Interface Solution Experts
5
SPA
Site-Programmable Volt &
Milliamp Limit Alarm Trips
Specifications
Repeatability: Trip point
repeats within ±0.05% of
input span
Display Accuracy: ±1
digit; When scaling the dis-
play (in Custom Mode), high
input-to-display span ratios
decrease display accuracy
Input Accuracy:
Current input, ±5µA; Voltage
inputs, ±1mV
Stability: ±0.1% of
calibrated span, maximum,
over 6 months
Deadband: 11.5V or
57.5mA, maximum in Linear
Mode; equivalent of maxi-
mum input range in user-set
engineering units in Custom
Mode
Response Time: 600 mil-
liseconds (Defined as time
from step change on input
to alarm state change when
alarm
is set to trip at mid-
point) Alarm Trip Delay:
Programmable from 0-60
seconds
Line Voltage Effect:
±0.005% of span for a
1% change in line voltage
(ac or dc)
Isolation: 1000Vrms
between case, input, output
(units with -AO option) and
power terminals (NOTE:
High voltage effect of
±0.0004% of output
span/V possible with
prolonged exposure to ac
voltage above 200Vac)
Power Consumption:
2-4W, nominal;
6W, maximum
Performance
Performance
(continued)
Ambient
Conditions
(continued)
Adjustments
Weight
Input Impedance: 1M
Ω
for
voltage inputs; 20
Ω
nominal
for current inputs
Input Over-Range Protec-
tion: 18Vdc for voltage
inputs; 180% of maximum
input span
WITH ANALOG OUTPUT
Output Accuracy: ±0.03%
of output span (includes the
combined effects of linear-
ity, hysteresis, repeatability,
and adjustment
resolution)
Response Time: 250
msec maximum time for
output to go from 10% to
90% for step change on
input
Ripple (up to 120Hz):
Current output, 10mV
peak-to-peak max. when
measured across a 250
Ω
resistor; Voltage output,
15mV peak-to-peak max.
Output Limiting: 117% of
span max., 115% of span
typical
Load Effect: ±0.01% of
span from 0 to maximum
load resistance on current
output
Operating Range:
–25°C to +65°C
(–13°F to +149°F)
Storage Range:
–40°C to +80°C
(–40°F to +176°F)
Ambient Temperature
Effect: ±0.005% of outut
span per °C maximum;
±15ppm of input signal
Relative Humidity:
0–95% non-condensing
RFI/EMI Protection:
30V/m - ABC
≤
0.5% error
in reading when tested ac-
cording to SAMA standard
PMC 33.1
Common Mode Rejection:
100dB @ 60Hz
Normal Mode Rejection:
40dB @ 60Hz (measured
w/current input)
Front panel push buttons
control settings for zero,
span, alarm trip points,
high/low alarms, etc.; Easy
access internal settings
select current (source or
sink) or voltage output, and
failsafe or
non-failsafe alarm func-
tions; Internal jumper and
menu password protect
parameter settings
LCD: 2x4 character, back-
lit, alphanumeric readout
accurate to the nearest
digit.
Range: -9999 to 9999;
Decimal point can be user-
set when in Custom Mode
LED’s: Dual-color TRIP
light (one for each relay)
shows green for non-alarm,
red for alarm; READY light
indicates normal operation,
extinguishes in the event of
any internal failure; INPUT
light is always green
456 to 513 g
(16.1 to 18.1 oz)
Ambient
Conditions
Indicators
Performance
with Analog
Output (-AO
Option)
Specifications and information subject to change without notice.
