|
DIS875
FREQUENCY INPUT
PROCESS INDICATORS
FEATURES
 | Provides 3 1/2 Digit Display, Red or Green LEDs |
| Display Calibrated in Engineering Units (rpm, fps, ips, mps, etc.) Proportional to Frequency Input |
| Fully Isolated Output and/or 0, 1, or 2 Alarms (Optional) |
| 50 mV to 100 V Peak Input Sensitivity |
| Selectable Sensitivity for Low Noise Level Rejection |
| Frequency Limit 60 kHz |
| Alarm Setpoints Adjustable Without Disturbing Transmitter Output |
| Fail-Safe Alarm Operation |
| LED Alarm Status Indicator |
| Adjustable Deadband |
| Unlimited* Choice of Input/Output Ranges |
| Fits Standard 1/8 DIN Cutout |
| Rated NEMA-4X, Splashproof and Corrosion Resistant When Properly Installed |
| 5 + 5 Year Warranty |
DESCRIPTION
The DIS875 provides a display, optional isolated DC output voltage or
current proportional to a frequency input signal, and optional alarm setpoints.
The units include filtering and conditioning to reduce susceptibility to
transients and noisy operations. The digital display utilizes an auto-zero
dual-slope integrating A/D converter for accuracy and stability.
All controls are accessible by removing a gasketed front access panel. The
display controls are wide-ranging so that it can be calibrated to display
engineering units. Decimal point selection is made with a switch, also
accessible from the front. A complete set of engineering unit labels is sent
with each DIS. Once the display has been adjusted to read the correct
engineering units, the alarm setpoints can be adjusted without test equipment
and without disturbing the output voltage or current.
The wide range input sensitivity allows the DIS to be driven from low level
magnetic pickups as well as logic level signals. A choice of three input
sensitivities allows the user to trade off sensitivity versus noise rejection. A
built-in pullup resistor is connected to a spare input terminal to permit use
with contact closure or open-collector inputs.
Either setpoint may be displayed by use of the SP CAL switch. Each
setpoint has an LED to indicate alarm status. The alarms have adjustable
deadbands. Terminations are made to a screw terminal connector on the rear of
the case.
TYPICAL APPLICATIONS
Flow, speed of motors, conveyors, etc., indication, control, Hi/Lo alarm.
MOUNTING
The DIS is designed to be mounted from the front of a panel through a standard
horizontal 3.62 x 1.77 inches (1/8 DIN) cutout. Two mounting cam-screws secure
the DIS to the panel.
SPECIFICATIONS
INPUT RANGE
select any range
from 0 to 10 Hz
min
to 0 to 60 kHz
max
INPUT SENSITIVITY
any voltage from
15
mV to 250 V rms
INPUT IMPEDANCE
100 kilohms or
greater
PULLUP RESISTOR
10 kilohms
Open Circuit
Voltage
+5
VDC
OUTPUT RANGE
Voltage
select any range
between ±10 V
10 mA max
load
(min span 0.2
V)
Current
select any range from 0
to 20 mA max
24 V compliance**
(min span 1
mA)
RELAY CONTACTS (spdt)
Resistive Load:
5 A max, 150 W max,
240
VAC max, 30 VDC max
Inductive Load:
1/8 HP max at 120/240 VAC
SETPOINT
each alarm 0 to 100% of span
DEADBAND
0.25% to 100% of
span
RESPONSE TIME
1 sec
typical
ISOLATION
Output/Input
>500 megohms
Breakdown
Voltage
>600 VAC rms
|
DISPLAY
Digit Size
.56 inch LED, 3 1/2 digits, ±1999
Decimal Point
±1.9.9.9
Control Range
Zero
±1999
Span
min span 10
max span 2000
Display Update
3/sec
ACCURACY
±0.1% of span
LINEARITY
Display
±0.01% of
span
Output
±0.025% of
span
OUTPUT RIPPLE
<0.1% of
span
(peak to
peak)
COMMON MODE REJECTION
120 dB, DC to 60 Hz
OPERATING TEMPERATURE
14°F to 140°F
-10°C to 60°C
TEMPERATURE STABILITY
±(0.02% of span +30 µV)/°C max
POWER
115 VAC ±10%, 50/60 Hz
(4 W max)
230 VAC ±10%, 50/60 Hz
(4 W max) |
* Within specified range limits.
**
Compliance: The sum of the voltage drops in the output loop cannot exceed 24 V at
rated current
(1200 ohms at 20 mA).
TERMINAL CONNECTIONS
Output - (Optional)
Output + (Optional)
Pull-Up Resistor A
High Level Input + B
Low Level Input - C
Input
-
Alarm 1 NC (Optional)
Alarm 1 C (Optional)
Alarm 1 NO (Optional)
Alarm 2 NC (Optional)
Alarm 2 C (Optional)
Alarm 2 NO (Optional)
Power AC
L1
Power AC
L2
|
(Terminals
Labeled)
1
2
3
4
5
6
7
8
9
10
11
12
13
14 |
|
