1 DS-110/120 series time relay application

This series of time relays is used in various protection and automatic circuits to provide adjustable delay for the action of controlled components.
Overview of Structure 2
The relay is a suction type electromagnetic relay with a delay mechanism.
The relay has one instantaneous conversion contact and one delayed closing main contact. For DS-1141115116124125126 relay, there is an additional delayed sliding main contact.
The coil of the relay is fixed inside the U-shaped magnet. When a voltage is applied to both ends of the coil, the armature (iron core) is sucked in, and the instantaneous dynamic contact is closed and the dynamic contact is disconnected. At the same time, the delay mechanism starts to move. Under the action of the tension spring of the delay mechanism, after a certain period of time (setting time), the main contact of the delayed dynamic contact is closed (for DS-114, 115, 116, 124, 125, 126 relays, the sliding main contact is closed first, and then the main contact of the delayed dynamic contact is closed after a certain period of time). The time (i.e. delay) from the moment of applying voltage to the moment of closing the main contact of the relay can be adjusted by changing the position of the static contact, and indicated directly on the scale plate of the relay by the pointer. When the coil breaks the circuit, the relay and delay mechanism return to their original positions instantaneously under the action of the tower spring.
The relay is installed on a vertical panel and can be wired from the front or back of the board.

The internal wiring diagram of the relay is shown in Figure 1

DS-111 DS-121 DS-112 DS-122 DS-113 DS-123DS-111C DS-112C  DS-113CDS-114 DS-124
DS-115 DS-125 DS-116 DS-126
Figure 1 Internal wiring diagram of DS-100 120 series relay (back view)

3 DS-110/120 Series Time Relay Technical Data
3.1 The specifications of various types of relays are listed in Table 1.

3.2 The consistency of the action time of the main contact of the relay is:
DS-111C, DS-111, DS-121, DS-114, and DS-124 should not exceed 0.06s;
DS-112C, DS-112, DS-122, DS-115, and DS-125 should not exceed 0.12s;
DS-113C, DS-113, DS-123, DS-116, and DS-126 should not exceed 0.25s,
Note: ① Action time consistency refers to the difference between the maximum and minimum action times measured 10 times at the same time set point
② The parameters specified in sections 3.1 and 3.2 are environmental temperature of+20 ℃± 5 ℃.
3.3 Thermal stability
3.3.1 DS-111，DS-112，DS-113，DS-114，DS-115，DS-116，DS-121，DS-122，DS-123，DS-124，DS-125 The coil of the DS-126 relay can withstand 110% of the rated voltage for 2 minutes, and the temperature rise of the coil does not exceed 60K.
3.3.2 The coils of DS-111C, DS-112C, and DS-113C relays can withstand 110% of the rated voltage for a long time.
When the current is not greater than lA and the voltage is not greater than 250V, the breaking power of the contacts in a DC circuit with an inductive load and a time constant not exceeding 0.005s is 100W.
The dielectric strength between the exposed non charged metal parts and the unconnected electrical circuits of the 3.5 relay should withstand an AC of 50Hz and a voltage of 2kV for 1 minute without breakdown or flashover.
At the maximum delay setting point, the relay can withstand 5000 turns on and off without mechanical damage.
Note: The number of actions per hour should not exceed 30.
The weight of the 3.7 relay is approximately 1.5kg.
3.8 DS-110， The appearance and installation dimensions of the 120 series relay are shown in Figure 2 and Figure 3.

Figure 2: Dimensions of DS-110120 Series Relays


a) Front wiring opening b) Rear wiring opening
Figure 3 DS-110120 series relay opening size

4 Ordering Instructions
Please indicate when placing an order
4.1 Name, model, and specifications of the relay.
4.2 Number of relays.
4.3 Wiring method (pre board wiring or post board wiring), if not specified, provide accessories for post board wiring.