Specifications
Publication 1760-SG001F-EN-P - May 2006
28 Pico and Pico GFX-70 Programmable Controllers
Table 20 GFX I/O Modules Relay Output Specifications
Specification 1760-IA12XOW4I, 1760-IB12XOW4IF
1760-IB12XOW4IOF, 1760-OW2
Number of relay outputs 4 (2 for the 1760-OW2)
Type of outputs Relays
In groups of 1
Connection of outputs in parallel to increase the output Not permissible
Protection for an output relay Miniature circuit-breaker B16: 16 A
or fuse (slow-blow): 8 A
Potential isolation to mains power supply, input, PC interface, memory module, Pico-Link
network, expansion I/O
Safe isolation: 300V ac
Basic insulation: 600V ac
Mechanical life span
10 x 10
6
switch operations
Contacts relays
Conventional thermal current, (UL) 8 A, (10 A)
Recommended for load at 12V ac/dc > 500 mA
Protected against short-circuit cos ϕ = 1, 16 A characteristic B (B16) at 600 A
Protected against short-circuit cos ϕ = 0.5 to 0.7, 16 A characteristic B (B16) at 900 A
Rated impulse withstand voltage U
imp
contact coil 6 kV
Rated insulation voltage U
i
Rated operational voltage U
e
250V ac
Safe isolation to EN 50178 between coil and contact 300V ac
Safe isolation to EN 50178 between two contacts 300V ac
Making capacity, IEC 60947
AC-15 250V ac, 3 A (600 Ops/h) 300,000 switch operations
DC-13 L/R ≤ 150 ms 24V dc, 1 A (500 Ops/h) 200,000 switch operations
Breaking capacity, IEC 60947
AC-15 250V ac, 3 A (600 Ops/h) 300,000 switch operations
DC-13 L/R ≤ 150 ms 24V dc, 1 A (500 Ops/h) 200,000 switch operations
Filament lamp load
1000 W at 230/240V ac 25,000 switch operations
500 W at 115/120V ac 25,000 switch operations
Fluorescent tube with ballast, 10 x 58 W at 230/240V ac 25,000 switch operations
Conventional fluorescent tube, compensated, 1 x 58 W at 230/240V ac 25,000 switch operations
Conventional fluorescent tube, uncompensated, 10 x 58 W at 230/240V ac 25,000 switch operations
Operating frequency, relays
Mechanical switch operations
10 million (10
7
) switch operations
Mechanical switching frequency 10 Hz
Resistive lamp load 2 Hz
Inductive load 0.5 Hz