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signo 721

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Easy operation and many setting options characterise the Signo 721 preset counter. It provides very high counting frequencies of up to 60 kilohertz and features a large 5-digit LCD display. It is backlit and easy to read.

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  • Very simple operation
  • Large, clearly readable LCD display
  • LCD reflective or backlit
  • Counting frequency up to 60 kHz
  • Prescaler 0.0001 - 9.9999

 

General

Product Family signo 721
Function Totalizing counter
Technology Electronic
Digits 5-digit
Display
  • 5-digit
  • 2-line
  • counting display/presets
  • leading zero suppression
  • decimal point (up to 4 places)
Preset
  • 1 preset
  • 2 presets
Digit Height [mm]
  • 1. Line 12.0 mm (0.5 in)
  • 2. Line 6.0 mm (0.3 in)
Display Variant
  • reflective LCD
  • transmissive negative LCD, digits backlit white or red on a black background
View Angle 12:00
Relay 1 or 1 relays

 

Electrical

Voltage
  • 12-30 VDC
  • 24-240 VAC
Reset
  • manual reset
  • electrical reset
  • automatic reset
Signal Times 0.01 s to 599.99 s or bistable, programmable, tolerance + 10 ms
Current Consumption [mA]
  • < 200 mA at 12-30 VDC reflective
  • < 250 mA at 12-30 VDC with backlight
  • <250 mA at 24 VAC
  • <50 mA at 115, 230 VAC
  • <80 mA at 100-240 VAC switching power supply
Power Consumption < 5 W…<8 W
Cable Cross-Section 1...1.5 mm² (0.0015...0.0023 in²) with multicore cable end
Input Resistance approx. 10 kOhm
Pulse Length min. 17 ms (30 Hz), 8 ?s (60 kHz)
Supply Voltage
  • 12-30 VDC
  • 24, 115, 230 VAC
  • 100-240 VAC
Count Frequency [Hz]
  • max. 60 kHz (TTL 20 kHz): Single-channel counting and directional input
  • max. 60 kHz (TTL 20 kHz): differential or totalizing operation
  • channel (A+B together)
  • max. 30 kHz (TTL 20 kHz): phase discriminator 1- or 2-fold evaluation
  • max. 15 kHz (TTL 15 kHz): phase discriminator 4-fold evaluation
  • attenuated 30 Hz
  • For further details, see graphic and manual.
Overload Protection
  • ext. backup
  • DC: 0.16 AT (IEC 127), DC: 0.2 AT (UL 198)
  • 24 VAC : 315 mAT
  • 115 VAC: 63 mAT
  • 230 VAC: 32 mAT
  • 100-240 VAC 630 mAT
Overload Protection Relay Output
  • ext. backup 230 V
  • 2.5 A mT
Sensor Supply
  • Transformer power supply: 12-24 VDC (load-dependent)
  • max. 50 mA
  • switch power supply 24 VDC -5%
  • max. 115 mA, max. capacitative load 470 µF
Storage of Values NVM > 10 years
Electrical Connection pluggable screw terminals / connecting clamps
Amplitude Threshold
  • < 2 V and > 8 V or < 1 V and > 4 V at TTL levels
  • amplitude max. 40 VDC
Active Edge programmable, positive with PNP input, negative with NPN input
Pulse Shape any square wave (1:1 for max. frequency)
Prescaler 0.0001 - 9.9999
Display and Preset Range - 99 999 to + 99 999
Relay (Preset 1 and 2)
  • Varistor max. 250 VAC / 30 VDC / 5 A
  • Varistor min. 5 VAC / 5 VDC / 10 mA
  • Delay < 10 ms
Transistor output (Preset 1 + 2)
  • DC supply: PNP output 12 - 30 VDC, max. 50 mA
  • transformer power supply (24, 115, 230 VAC): PNP output 12 - 24 VDC, max. 30 mA
  • switch power supply 100-240 VAC: PNP output 24 VDC, max. 50 mA
Application Output
  • DC supply: PNP output 12 - 30 VDC, max. 20 mA
  • transformer power supply (24, 115, 230 VAC): PNP output 12 - 24 VDC, max. 20 mA
  • switch power supply 100-240 VAC: PNP output 24 VDC, max. 20 mA
Attention
  • Only for transformers (24, 115, m230 VAC:
  • The energy load on the outputs (sensors 12-24 VDC, out1, out2, Appl.-Outp.) may not be more than 65 mA total.

 

Counter

Counter Mode Input A,B
  • Single channel add or sub, directional input,
  • differential operation add / sub, totalizing operation add / add,
  • phase discriminator 1-, 2- or 4-fold evaluation
Application Input/Output (Counter)
  • Output: Prescaler-out
  • direction-out
  • input: Reset
  • Gate
  • Keylock
  • Hold

 

Environment and security

IP Protection Class IP 65
Operating Temperature [°C] 0 … + 50 °C (+ 32 ... 122 °F) EN 60 068-2-1/2
Storage Temperature [°C] - 20... + 65 °C (- 4 ... 149 °F) EN 60 068-2-1/2
Degree of Protection
  • IP 65 front, EN 60529
  • IP 20 connections
Cable Length
  • * An additional protective circuit is required when using cables longer than 30 m
  • which are connected to a DC power supply at TTL input levels
General Design EN 61 010-1 / IEC 61010-1
EMC - Interference immunity EN 61326-1 Industrial*
EMV-Emission EN 61326-1 Class B*
Approvals
  • UL
  • CSA File-Nr. E 338588
Vibration Resistance 10 m/s² (33 ft/s²) (10 . 150 Hz), EN 60 068-2-6
Shock Resistance 100 m/s2 (328 ft/s2) (18 ms) acc.IEC 068-2-27
Protection Class II, EN 61010-1 / IEC 61010-1
Contamination Level
  • V 2
  • EN 50178
Climate
  • 40°C (104 °F)/ 93% RH class 4K4H
  • EN 60 068-2-78
  • 25 - 50°C (122 °C) / 93% RH
  • cyclic
  • EN 60 068-2-38
  • elevations up to 2000 m (6561 ft)
Resistence to Chemicals front film acc. DIN 42 115-2
RoHS compliant

 

Mechanical

Size [mm] 48x48x118
Mounting Options Clamping frame
Mounting with clamping frame
Reset
  • manual reset using keypad
  • external reset static or dynamic
  • pulse duration min. 5 ms
  • automatic reset after preset 2 has been reached
  • (no loss of pulse at the maximum counting frequency due to automatic resetting.)
  • programmable using application input and power-up reset
Weight [g] approx. 200 g (3.2 oz)
Dimensions [mm] 48 mm x 48 mm x 118 mm (1.9 x 1.9 x 4.6 in), installation depth 110 mm (4.4 in), DIN 43 700
Panel Thickness [mm] max. 11 mm
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Shopping instructions

Contact us

Address:

Eltron L.L.L.P.
ul. Brodzka 10B
54-103 Wrocław

Customer Service:

Telefon: +48 71 343 97 55
E-mail: kontakt@eltron.pl

Find us elsewhere:

Address:
Eltron L.L.L.P.
ul. Brodzka 10B
54-103 Wrocław

Customer Service:
Telefon: +48 71 343 97 55
E-mail: kontakt@eltron.pl

Find us elsewhere: