NOSHOK 1950 User Manual

1950 SERIES - COMPACT SMART SYSTEM 5-DIGIT PROCESS METER

THREE SELECTABLE D.C. RANGES

0to10V,0(4)to20mA,0to50mA

MINIMUM AND MAXIMUM DISPLAY CAPTURE

LCD, REFLECTIVE OR RED/GREEN LED BACKLIGHTING

0.48" (12.2 mm) HIGH DIGITS

OPTIONAL SETPOINT OUTPUT MODULES

OPTIONAL SERIAL COMMUNICATIONS MODULES (RS232 or RS485)

OPERATES FROM 9 TO 28 VDC POWER SOURCE

FRONT PANEL OR CRIMSON PROGRAMMABLE

DISPLAY COLOR CHANGE CAPABILITY AT SETPOINT OUTPUT

NEMA 4X/IP65 SEALED FRONT BEZEL

GENERAL DESCRIPTION

The 1950 Series provides the user the ultimate in flexibility, from its
complete user programming to the optional setpoint control and communication­capability. The 1950 accepts a DC voltage or current input signal and provides a
display in the desired unit of measure. The meter also features minimum and
maximum display capture, display offset, units indicator, and programmable­user input. The display can be toggled either manually or automatically between
the selected displays.

The 1950 display has 0.48" (12.2 mm) high digits. The LCD is available in two
versions, reflective or red/green backlight. The backlight version is user
selectable for the desired color and also has variable display intensity.

The capability of the 1 9 5 0 can be easily expanded with the addition of
option modules. The setpoint output cards are field installable with
programmable setpoints. Serial communications capability for RS232 or RS485
can be added with a serial option module.

The 1 950 can be powered from an optional N O SH OK Micro­Line/SensorPower Supply (PS3), which attaches directly to the back of a 1950.
The PS3 is powered from 85 to 250 VAC and provides up to 400 mA to drive the
unit and sensors.

INPUT

The 1950 is a DC Process meter. It features voltage and current input ranges,
that are selected by the user via a programming jumper and software input range
selection. The ranges consist of the following: 0 to 10 V, 0(4) to 20mA, or 0 to
50 mA. Users should select the appropriate voltage range that covers their
maximum input.

DIMENSIONS In Inches (mm)

Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 2.15" (54.6) H x 3.00" (76.2) W.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in this
literature or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

Do not use this meter to directly command motors, valves, or other actuators
not equipped with safeguards. To do so can be potentially harmful to persons or
equipment in the event of a fault to the meter.

CAUTION: Risk of Danger.

Read complete instructions prior to

installation and operation of the unit.

CAUTION: Risk of electric shock.

1

GENERAL METER SPECIFICATIONS

1. DISPLAY: 5 digit LCD 0.48" (12.2 mm) high digits

1950X-1 : Reflective LCD with full viewing angle
1950X-2 : Transmissive LCD with selectable red or green LED backlight,

viewing angle optimized. Display color change capability with output state
when using an output module.

2. POWER: Input voltage range is +9 to +28 VDC with short circuit and input
polarity protection. Must use an NOSHOK model PS3 or a Class 2 or SELV
rated power supply.

MODEL

NO.

1950X-1 --- 10 mA 40 mA
1950X-2 Red (max intensity) 85 mA 115 mA
1950X-2 Green (max intensity) 95 mA 125 mA

DISPLAY COLOR

INPUT CURRENT

@ 9 VDC WITHOUT

RELAY CARD

INPUT CURRENT

@ 9 VDC WITH

RELAY CARD

3. INPUT RANGES: Jumper Selectable
0 to 10 V, 0(4) to 20 mA, 0 to 50 mA

4. SENSOR INPUTS:

INPUT

RANGE

20 / 50 mA 0.1% of span

10 VDC 0.1% of span

ACCURACY
@23 °C, less
than 85% RH

INPUT

IMPEDANCE

10 :

538 K:

MAX INPUT

SIGNAL

150 mA 1μA 70 ppm / °C

RESOLUTION

30 V 1mV 70 ppm / °C

TEMP.

COEFFICIENT

5. OVERRANGE RATINGS, PROTECTION & INDICATION:
9 to 28 VDC power circuit is not isolated from the signal circuit.

Input Overrange Indication:“OLOL ”.

Input Underrange Indication:“
Display Overrange/Underrange Indication:“

ULUL ”.

.....”/“-.....”

6. DISPLAY RESPONSE TIME: 500 msec min.

7. NORMAL MODE REJECTION: 60 dB 50/60 Hz

8. USER INPUT (USR): Programmable input. Connect USR terminal to USR
COMM to activate function. Internal 10K: pull-up resistor to +9 to 28 VDC.

Threshold Levels:V
Response Time: 5 msec typ.; 50 msec debounce (activation and release)

= 1.0 V max; VIH= 2.4 V min; V

IL

MAX

= 28 VDC

9. CONNECTIONS: Wire clamping screw terminals

Wire Strip Length: 0.3" (7.5 mm)
Wire Gage: 30-14 AWG copper wire
Torque: 5 inch-lbs (0.565 N-m) max.

10. MEMORY: Nonvolatile E

2

PROM memory retains all programming

parameters and max/min values when power is removed.

11. CONSTRUCTION: This unit is rated for NEMA 4X/IP65 requirements for

indoor use. Installation Category I, Pollution Degree 2. High impact plastic
case with clear viewing window. Panel gasket and mounting clip included.

12. ENVIRONMENTAL CONDITIONS:

Operating Temperature Range for 1950X-1 : -35 to 75°C
Operating Temperature Range for 1950X-1/1950X-2 depends on display

color and intensity level as per below:

Red Display

Green Display

INTENSITY LEVEL

1&2 -35 to 75°C

3 -35 to 70°C
4 -35 to 60°C
5 -35 to 50°C

1&2 -35 to 75°C

3 -35 to 65°C
4
5

TEMPERATURE

-35 to 50°C

-35 to 35°C

Storage Temperature: -35 to 85°C
Operating and Storage Humidity: 0 to 85% max. relative humidity (non-

condensing)

Vibration According to IEC 68-2-6: 5 to 500 Hz, in X, Y, Z direction for 1.5

hours, 5 g’s.

Shock According to IEC 68-2-27: Operational 30 g, 11 msec in 3 directions.
Altitude: Up to 2000 meters

13. CERTIFICATIONS AND COMPLIANCES:
IEC 61010-1, EN 61010-1: Safety requirements for electrical equipment

for measurement, control, and laboratory use, Part 1.

IP65 Enclosure rating (Face only), IEC 529

ELECTROMAGNETIC COMPATIBILITY

Emissions and Immunity to EN 61326: Electrical Equipment for
Measurement, Control and Laboratory use.

Immunity to Industrial Locations:

Power frequency magnetic fields

Emissions:

Notes:

1. Criterion A: Normal operation within specified limits.
Refer to EMC Installation Guidelines for additional information.

14. WEIGHT: 3.2 oz (100 g)

EN 61000-4-6RF conducted interference

EN 61000-4-8

Criterion AEN 61000-4-2Electrostatic discharge
4 kV contact discharge
8 kV air discharge
Criterion AEN 61000-4-3Electromagnetic RF fields
10 V/m
Criterion AEN 61000-4-4Fast transients (burst)
2 kV power
1 kV signal
Criterion AEN 61000-4-5Surge
1 kV L-L,

2 kV L&N-E power
Criterion A
3 V/rms
Criterion A
30 A/m

Class AEN 55011Emissions

2

OPTIONAL PLUG-IN CARDS

ADDING OPTION CARDS

The 1950 meters can be fitted with optional output cards and/or serial
communications cards. The details for the plug-in cards can be reviewed in the
specification section below. The plug-in cards, that are sold separately, can be
installed initially or at a later date.

WARNING: Disconnect all power to the unit before

installing Plug-in card.

Note: Measurement errors may occur if signal input common is shared with

another circuit common (ie, serial common, Dual Sinking Output option card,

or Power Supply common) on multiple units.

SINGLE RELAY CARD

Type: Single FORM-C relay

Isolation To Sensor & User Input Commons: 1400 Vrms for 1 min.

Working Voltage: 150 Vrms

Contact Rating: 1 amp @ 30 VDC resistive; 0.3 amp @ 125 VAC resistive

Life Expectancy: 100,000 minimum operations

Response Time:

Turn On Time: 4 msec max.
Turn Off Time: 4 msec max.

1.0 INSTALLING THE METER

DUAL SINKING OUTPUT CARD

Type: Non-isolated switched DC, N Channel open drain MOSFET
Current Rating: 100 mA max.
V

: 0.7 V @ 100 mA

DS ON

V

: 30 VDC

DS MAX

Offstate Leakage Current: 0.5 mA max.

RS485 SERIAL COMMUNICATIONS CARD

Type: RS485 multi-point balanced interface (non-isolated)
Baud Rate: 300 to 38.4k
Data Format: 7/8 bits; odd, even, or no parity
Bus Address: 0 to 99; max 32 meters per line
Transmit Delay: Selectable

RS232 SERIAL COMMUNICATIONS CARD

Type: RS232 half duplex (non-isolated)
Baud Rate: 300 to 38.4k
Data Format: 7/8 bits; odd, even, or no parity

INSTALLATION

The meter meets NEMA 4X/IP65 requirements when properly installed. The
unit is intended to be mounted into an enclosed panel. Prepare the panel cutout
to the dimensions shown. Remove the panel latch from the unit. Slide the panel
gasket over the rear of the unit to the back of the bezel. The unit should be
installed fully assembled. Insert the unit into the panel cutout.

2.0 SETTING THE JUMPERS

INPUT RANGE JUMPER

This jumper is used to select the proper input range. The input range selected
in programming must match the jumper setting. Select a range that is high
enough to accommodate the maximum input signal to avoid overloads. To
access the jumper, remove the rear cover of the meter.

While holding the unit in place, push the panel latch over the rear of the unit
so that the tabs of the panel latch engage in the slots on the case. The panel latch
should be engaged in the farthest forward slot possible. To achieve a proper seal,
tighten the latch screws evenly until the unit is snug in the panel (Torque to
approx. 28 to 36 in-oz [0.202 to 0.26 N-m]). Do not over-tighten the screws.

INSTALLATION ENVIRONMENT

The unit should be installed in a location that does not exceed the operating
temperature and provides good air circulation. Placing the unit near devices that
generate excessive heat should be avoided.

The bezel should only be cleaned with a soft cloth and neutral soap product.
Do NOT use solvents. Continuous exposure to direct sunlight may accelerate the
aging process of the bezel.

Do not use tools of any kind (screwdrivers, pens, pencils, etc.) to operate the
keypad of the unit.

Warning: Exposed line voltage exists on the circuit boards. Remove

all power to the meter and load circuits before accessing inside of
the meter.

REMOVING THE REAR COVER

To remove the rear cover, locate the cover locking tab below the 2nd and 3rd
input terminals. To release the tab, insert a small, flat blade screwdriver between
the tab and the plastic wall below the terminals. Inserting the screwdriver will
provide enough pressure to release the tab locks. To replace the cover, align the
cover with the input terminals and press down until the cover snaps into place.

3

3.0 INSTALLING PLUG-IN CARDS

The Plug-in cards are separately purchased option cards that perform specific

functions. The cards plug into the main circuit board of the meter

Range Jumpers

Setpoint Card

Comms Card

Locking Tab

4.0 WIRING THE METER

WIRING OVERVIEW

Electrical connections are made via screw-clamp terminals located on the
back of the meter. All conductors should conform to the meter’s voltage and
current ratings. All cabling should conform to appropriate standards of good
installation, local codes and regulations. It is recommended that the power
supplied to the meter (DC or AC) be protected by a fuse or circuit breaker.

Strip the wire, leaving approximately 0.3" (7.5 mm) bare lead exposed
(stranded wires should be tinned with solder.) Insert the lead under the correct
screw-clamp terminal and tighten until the wire is secure. (Pull wire to verify
tightness.) Each terminal can accept up to one #14 AWG (2.55 mm) wire, two
#18 AWG (1.02 mm), or four #20 AWG (0.61 mm).

EMC INSTALLATION GUIDELINES

Although this meter is designed with a high degree of immunity to Electro­Magnetic Interference (EMI), proper installation and wiring methods must be
followed to ensure compatibility in each application. The type of the electrical
noise, source or coupling method into the meter may be different for various
installations. The meter becomes more immune to EMI with fewer I/O
connections. Cable length, routing, and shield termination are very important
and can mean the difference between a successful or troublesome installation.
Listed below are some EMC guidelines for successful installation in an
industrial environment.

1. The meter should be mounted in a metal enclosure, which is properly

connected to protective earth.

2. Use shielded (screened) cables for all Signal and Control inputs. The shield

(screen) pigtail connection should be made as short as possible. The

connection point for the shield depends somewhat upon the application.

Listed below are the recommended methods of connecting the shield, in order

of their effectiveness.

a. Connect the shield only at the panel where the unit is mounted to earth

ground (protective earth).

b. Connect the shield to earth ground at both ends of the cable, usually when

the noise source frequency is above 1 MHz.

CAUTION: The Plug-in cards and main circuit board contain static

sensitive components. Before handling the cards, discharge
static charges from your body by touching a grounded bare
metal object. Ideally, handle the cards at a static controlled
clean workstation. Also, only handle the cards by the edges.
Dirt, oil or other contaminants that may contact the cards can
adversely affect circuit operation.

REMOVING THE REAR COVER

To remove the rear cover, locate the cover locking tab below the 2nd and 3rd
input terminals. To release the tab, insert a small, flat blade screwdriver between
the tab and the plastic wall below the terminals. Inserting the screwdriver will
provide enough pressure to release the tab locks. To replace the cover, align the
cover with the input terminals and press down until the cover snaps into place.

c. Connect the shield to common of the meter and leave the other end of the

shield unconnected and insulated from earth ground.

3. Never run Signal or Control cables in the same conduit or raceway with AC

power lines, conductors feeding motors, solenoids, SCR controls, and

heaters, etc. The cables should be ran in metal conduit that is properly

grounded. This is especially useful in applications where cable runs are long

and portable two-way radios are used in close proximity or if the installation

is near a commercial radio transmitter.

4. Signal or Control cables within an enclosure should be routed as far as possible

from contactors, control relays, transformers, and other noisy components.

5. In extremely high EMI environments, the use of external EMI suppression

devices, such as ferrite suppression cores, is effective. Install them on Signal

and Control cables as close to the unit as possible. Loop the cable through the

core several times or use multiple cores on each cable for additional protection.

Install line filters on the power input cable to the unit to suppress power line

interference. Install them near the power entry point of the enclosure. The

following EMI suppression devices (or equivalent) are recommended:

Ferrite Suppression Cores for signal and control cables:

Fair-Rite # 0443167251
TDK # ZCAT3035-1330A
Steward # 28B2029-0A0

Line Filters for input power cables:

Schaffner # FN610-1/07
Schaffner # FN670-1.8/07
Corcom # 1 VR3

Note: Reference manufacturer’s instructions when installing a line filter.

6. Long cable runs are more susceptible to EMI pickup than short cable runs.

Therefore, keep cable runs as short as possible.

7. Switching of inductive loads produces high EMI. Use of snubbers across

inductive loads suppresses EMI.

4.1 POWER WIRING

DC Power

+9 to +28 VDC: +VDC
Power Common: -VDC

CAUTION:9to28VDC

power circuit is not isolated
from the signal circuit.

4.2 USER INPUT WIRING

Sinking Logic

USR COMM
USR

The user input of the meter is
internally pulled up to +9 to +28 V
with 10 K resistance. The input is
active when it is pulled low (<0 .7 V).

4

Connect external switching device between the

}

User Input terminal and User Input Common.