Timers Two-state Relay Type SG 125 * Two-state relay with built-in memory * Time ranges: 0.15 s to 3 s * Switches, with a preset delay, to opposite contact position at power supply interruption * Repeatability deviation: 1% * Output: 8 A SPDT relay * Plug-in type module * S-housing * LED-indication for relay on * AC or DC power supply Product Description Ordering Key Two-state, plug-in time relays with built-in memory and timer up to 3 s. When interrupting power supply, the contact switches after an adjustable delay to the opposite posi- Housing Function Output Type Power supply tion where it remains. Often used in applications with two pumps in order to prevent the same pump from always starting first. SG 125 024 Type Selection Plug Output Time range Circular SPDT 0.15 -3 s Supply: 24 VAC Supply: 115 VAC Supply: 230 VAC Supply: 24 VDC SG 125 024 SG 125 115 SG 125 230 SG 125 724 Time Specifications Time ranges Time range accuracy Repeatability deviation Time variation Within rated power supply and ambient temperature Reset Output Specifications 0.15 - 3 s 0 to +20% on max. min. actual time min. set time 1% 0.2%/C 0.05%/V set delay SPDT relay Basic electrical insulation Contact ratings (AgCdO) Resistive loads AC 1 DC 1 or Small inductive loads AC 15 DC 13 Mechanical life Electrical life AC 1 250 VAC (rms) (contact/electronics) (micro gap) 10 A/250 VAC (2000 VA) 1 A/250 VDC (100 W) 4 A/25 VDC (100 W) 2.5 A/230 VAC 5 A/24 VDC 30 x 106 operations 2.5 x 105 operations (at max. load) 7200 operations/h Operating frequency Insulation voltages Rated insulation voltage 2.0 kVAC (rms) (cont./elec.) Rated transient protection volt. 4 kV (1.2/50 s) (cont./elec.) (IEC 60664) Specifications are subject to change without notice (27.10.99) 1 SG 125 Supply Specifications General Specifications Power supply AC types Rated operational voltage through pins 2 & 10 230 115 024 Drop-out tolerance Rated insulation voltage Power ON time Power OFF delay Indication for Output ON Environment Degree of protection Pollution degree Operating temperature Storage temperature Weight AC types DC types Approvals Installation cat. III (IEC 60664) 230 VAC 15%, 45 to 65 Hz 115 VAC 15%, 45 to 65 Hz 24 VAC 15%, 45 to 65 Hz 40 ms 2.0 kVAC (rms) (supply/elec.) Rated transient protection volt. 4 kV (1.2/50 s) (line/neutral) Power supply DC type Installation cat. III (IEC 60664) Rated operational volt. 724 24 VDC 15% (pin 2 pos.) Rated insulation voltage None Rated transient protection volt. 800 V (1.2/50 s) Consumption AC supply 2.5 VA DC supply 1.5 W Mode of Operation The relay contact remains in its present position (pins 1 and 4 or pins 1 and 3) when power supply is applied. 1s set delay LED. red IP 20 B 2 (IEC 60664) -20 to +50C (-4 to +122F) -50 to +85C (-58 to +185F) 200 g 125 g UL, CSA Wiring Diagram When interrupting power supply, however, after a delay of 0.15 - 3 s set on the potentiometer the contact switches to the opposite position where it remains. Power supply Accessories Socket Hold down spring Mounting rack Socket cover Front mounting bezel Potentiometer lock Time Setting S 411 HF SM 13 BB 4 FRS2 PL 0.15 - 3 s. Knob-adjustable on relative scale. For further information refer to "Accessories". For other AC/DC voltages refer to "General Information". Operation Diagram Power supply Relay ON, pins 1 & 3 Relay ON, pins 1 & 4 2 Specifications are subject to change without notice (27.10.99)