PY08-02 Datasheet, PDF (7/16 Pages) Omron Electronics LLC – Versatile and Function-filled Miniature Power

Typical information for reference only
The following data is provided as experimental and/or calculated data for reference only. These figures fall under the category of typical behaviour
and the operation of individual relays will vary according to the exact operating conditions.
Typical Operate / Release Times
AC Type (operate / release time)
DC Type (operate / release time)
Load reduction Factor
1
0.8
2-Pole model
8 ms/8 ms
14 ms/4 ms
4-Pole model
10 ms/10 ms
14 ms/6 ms
For AC inductive loads (such as solenoids, contactors coils, etc.) the re-
duction factor corresponding to cos(p.f.) (cosine of the power factor) is
multiplied by the rated current in order to identify the maximum allowable
current. This approximation is not valid for loads with high inrush cur-
rents such as electric motors or fluorescent lamps.
0.6
0.4
1
0.8
0.6
0.4
cos(p.f.)
Multiple Contact DC Switching Capacity
Switching capacity of DC resistive load
100
0.2
Effect of temperature on coil voltages
MY2/4 Operating range (DC and AC type) vs ambient temperature
2
1
10
1.5
MY4
2
1
1.0
4 contacts
3 contacts
2 contacts
in series
MY2
0,1
20
40 60
80 100 120 140 160 180 200 220
Switching Voltage (Vdc)
0.5
0
1: Max coil voltage permitted.
2: Min pick-up voltage with coil
at ambient temperature
10
20
30
40
50
60
70
80
Ambient temperature (˚C)
This graph can be used to estimate the number of contacts that can be This graph shows the typical relationship between the maximum / mini-
used to switch DC resistive loads
mum coil and pick-up voltage and ambient temperature
General-purpose Relay MY
7