Specifications are subject to change without notice (22.12.99) 1
Timers
Product Description
Housing
Type/Function
Output
Power supply
Time ranges 0.15 - 3 s
Selectable by DIP-switch 0.6 - 12 s
5 - 100 s
40 - 800 s
Time range accuracy 0 to +10% max.
min. actual time ≤min.
set time
Repeatibility deviation ≤1%
Time variation
Within rated power supply ≤0.05%/V
and ambient temperature ≤0.2%/°C
Reset Power supply interruption min.
Time and/or relay 200 ms
Plug Output Time range Supply: 24 VAC Supply: 115 VAC Supply: 230 VAC Supply: 24 VDC
Circular 2 x SPDT 0.15 s - 800 s S 1151 256 024 S 1151 256 115 S 1151 256 230 S 1151 256 724
Output 2 x SPDT relay
Basic electrical insulation 250 VAC (rms) (contact/
elec., contact/contact)
Contact ratings (Ag-CdO) µ (micro gap)
Resistive load AC 1 10 A/250 VAC (2500 VA)
DC 1 1 A/250 VDC (250 W)
or 10 A/25 VDC (250 W)
Small inductive loads AC 15 2.5 A/230 VAC
DC 13 5 A/24 VDC
Mechanical life ≥2.5 x 105operations
Electrical life ≥2.5 x 105operations
Operating frequency ≤7200 operations/h
Insulation voltages
Rated insulation voltage 2.0 kVAC (rms) (cont./elec.)
Rated transient protection volt. 4 kV (1.2/50 µs) (cont./elec.)
(IEC 60664)
Two-state delay on operate,
plug-in time relays. Often
used in applications with
pumps where a delay is nec-
essary at start and restart,
and if the capacity of the first
pump is insufficient no. 2
starts after a given delay. This
may be done automatically
by means of the SG 125.
• 4 selectable time ranges: 0.15 s to 800 s
• Automatic start
• Separate time-setting for the two delay on operate
time periods
• Repeatibility deviation: ≤1%
• Selection of order of relays
• Output: 2 x 10 A SPDT relay
• Plug-in type module
• S-housing
• LED-indication for relay 1 and relay 2 on
• AC or DC power supply
Two-state Delay on Operate
Type S 1151
Ordering Key
Type Selection
Time Specifications Output Specifications
S 1151 256 024
2Specifications are subject to change without notice (22.12.99)
Mode of Operation
The time period for relay 1
starts when power supply is
applied.
At the end of the set time pe-
riod, relay 1 operates and the
time period for relay 2 starts.
At the end of the second set
time period, relay 2 operates
and both relays will not re-
lease until power supply is
interrupted.
S 1151
Wiring Diagram
Power supply
Ext. reversion
Power supply
Relay 1 ON
Relay 2 ON
Power supply AC types Installation cat. III (IEC 60664)
rated operational voltage
through pins 2 & 10 230 230 VAC ± 15%, 45 to 65 Hz
115 115 VAC ± 15%, 45 to 65 Hz
024 24 VAC ± 15%, 45 to 65 Hz
Drop-out tolerance ≥40 ms
Rated insulation voltage ≥2.0 kVAC (rms)
Rated transient protection volt. 4 kV (1.2/50 µs)
(line/neutral)
Power supply DC types 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 µs)
Consumption AC supply 2.5 VA
DC supply 1.5 W
Power ON delay ≤200 ms
Power OFF delay ≥200 ms
Indication for
Output 1 ON LED, red
Output 2 ON LED, red
Environnment
Degree of protection IP 20 B
Pollution degree 2 (IEC 60664)
Operating temperature -20° to +50°C (-4° to +122°F)
Lagertemperatur -50° to +85°C (-58° to +185°F)
Weight
AC supply 200 g
DC supply 125 g
Approvals UL, CSA
Selection of function
DIP-switch selector 1
Relay 1 operates
first (pins 1,3 and 4), when the
DIP-switch at the front of the
housing is in OFF-position
Relay 2 operates
first (pins 8,9 and 10) when the
DIP-switch at the front of the
housing is in ON-position
Reverse function (pins 5 and 7)
Selection of time-range
T1: DIP-switch selector (2&3)
T2: DIP-switch selector (4&5)
0.15 - 3 s
0.6 - 12 s
5 - 100 s
40 - 800 s
Time setting
Knob-adjustable on scale in
per cent of max. time. DIP-
switch for selecting function
and time are placed behind a
small removable front on the
front of the time relay.
12345
1 2 3 4 5
The order of the relays can be
inverted by means of a DIP-
switch at the front of the hous-
ing or by interconnecting pins
5 and 7 on the socket.
If power supply is interrupted
for at least 200 ms, the time
relay and time circuit are re-
set and the relay is ready for a
new time period.
Sockets◊S 411, D 411 B
Hold down spring◊HF
Mounting rack SM 13
Socket covers BB 4, BB 5B
Potentiometer lock PL 2
Front mounting bezel FRS 2
For further information refer to "Accessories".
12345
Supply Specifications General Specifications
Function/Time Setting
Accessories
Operation Diagram
