Page 61 - Multi-line-automatic

Monitoring devices

EWT2A
Monitoring devices

Product description
Technical data
The EWT2A series of universal pulse monitoring devices can
be used in all standard SKF lubrication systems The pulse, Function principle universal electronic control
generated from a progressive metering valve sensor, a pulse Operating temperature and monitoring device
0 to +60 °C
generator or a rotary gear sensor, must be received within a +32 to 140 °F
pre-selected and defined value Depending on the selected Output voltage 24 V DC +10% /–15%
version, a minimum and a maximum value can be monitored Dimensions 70 × 75 × 110 mm
2.7 × 3 × 4.3 in
simultaneously for two or three pulse inputs The EWT2A
pulse monitoring devices are available in two voltage versions Version + 471
and may be installed in a switching cabinet All devices have Input voltage 100–120 V AC; 200–240 V AC
70 mA /35 mA
Input current rated
custom-built functions integrated and can be set to meet sys- Power input 8 W
tem requirements Frequency 50 – 60 Hz
Fuse max 6 3 A
Switching current max 5 A
Output voltage sensors 24 V DC
Features and benefits
Version + 472
• Easy installation by top hat rail mounting Input voltage 20 to 24 V DC; 20 to 24 V AC
• Adjustable operating modes Input current rated 75 mA at max fan-out of 250 mA
• Monitoring time 6-90 seconds Power input 5 W
DC or 50 – 60 Hz
Frequency
• Settings possible from 0,01 to 2 500 pulses/minute Fuse max 6 3 A
Switching current max 5 A
Output voltage sensors 24 V DC
Applications
• In connection with a pulse generator for
oil and grease to reliably monitor lubricant flow

Order information NOTE
For further technical information, technical drawings,
Order number Description
accessories, spare parts or product function descriptions,
see the following publications available on
EWT2A01-S1-E+471 for up to 3 pulse generators, 115/230 V AC SKF com/lubrication:
EWT2A01-S1-E+472 for up to 3 pulse generators, 24 V DC
EWT2A04-S1-E+471 for up to 2 pulse generators, 115/230 V AC 1-1700-5 EN, 951-180-001 EN
EWT2A04-S1-E+472 for up to 2 pulse generators, 115/230 V AC

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