Cut Sheet

Volume 7—Logic Control, Operator Interface and Connectivity Solutions CA08100008E—July 2015 www.eaton.com V7-T3-203
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3.11
Control Relays and Timers
easySafety
easySafety Relay, continued
Description Unit ES4P_
Relay Outputs
Number 4 for ES4P-…-DR_, 1 redundant for ES4P-…-DM_
Outputs in groups of 1
Parallel switching of outputs to increase power Not permissible
Protection of an output relay Fuse: 6 A gG, circuit breaker with characteristic C: 24 Vdc 4 A, Short-circuit current <250 A
Potential isolation
From power supply Yes
From the inputs Yes
From PC interface, memory card, EASYNet, EASYLink Yes
Safe isolation according to EN 50178 Vac 300
Basic insulation Vac 600
Lifespan, mechanical Operations x 10
6
10
Contacts
Conventional thermal current A 6
Rated impulse withstand voltage U
imp
contact coil kV 6
Rated operational voltage U
e
Vac 250
Rated insulation voltage U
i
Vac 250
Safe isolation to EN 50178 between coil and contact Vac 300
Making capacity
AC-15, 230 Vac, 3 A Operations 80,000
DC-13, 24 Vdc, 5 A, 0.1 Hz Operations 40,000
Switching frequency
Mechanical operations x 10
6
10
Switching frequency Hz 10
UL/CSA
UL 508 B300/R300
Transistor Outputs
Number 4
Rated operational voltage U
e
Vdc 24
Permissible range U
e
Vdc 20.4–28.8
Ripple % 5
Protection against polarity reversal Yes (Caution: A short-circuit will result if 0 V or GND is applied to the outputs in the event that the
supply voltage is connected to the wrong poles.)
Potential isolation
From power supply Yes
From the inputs Yes
From PC interface, memory card, network, EASYNet, EASYLink Yes
Rated operational current at signal “1” DC I
e
A Maximum 0.5
At signal “1” with I
e
= 0.5 A V U = U
e
–1 V
Short-circuit protection Yes, thermal
Short-circuit tripping current for RA 10 m ohms A 0.7 I
e
2 per output
Total short-circuit current A 8
Peak short-circuit current A 16
Thermal cutout Yes
Maximum operating frequency at constant resistive load RL <100 kO
(dependant on program and load)
Ops/h 40,000
Parallel connection of outputs No
Status indication of the outputs LCD display (if provided)
Inductive load
Without external suppressor circuit
Duty factor T
0.95
≈ 3 x T
0.65
= 3 x L/R T
0.95
= Time in ms, until 95% of the
steady-state current has been reached
With external suppressor circuit
Utilization factor g 1
Duty factor % DF 100
Maximum switching frequency, maximum duty factor Operations Depending on the suppressor circuit