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Safety Relay Unit


Complete line-up of compact units, including OFF-delayed safety output models


Power Input

Model G9SE-201 G9SE-401 G9SE-221-T[]
Rated supply voltage 24 VDC
Operating voltage range -15% to 10% of rated supply voltage
Rated power consumption *1 3 W max. 4 W max.


Model G9SE-201 G9SE-401 G9SE-221-T[]
Safety output
OFF-delayed Safety output
Contact output
250 VAC 5 A 30 VDC 5 A (resistive load)
Auxiliary output PNP transistor output Load current: 100 mA DC max.


Model G9SE-201 G9SE-401 G9SE-221-T[]
Operating time (OFF to ON state) *2 100 ms Max. *3
Response time (ON to OFF state) *4 15 ms Max.
Accuracy of OFF-delay time - Within plus or minus
10% of the set value
Inputs Input current 5 mA Min.
ON voltage 11 VDC Min.
OFF voltage 5 VDC Max.
OFF current 1 mA Max.
Maximum cable length 100 m Max.
Reset input time 250 ms Min.
Contact resistance *5 100 mΩ
Mechanical durability 5,000,000 operations Min.
Electrical durability 50,000 operations Min.
Switching specification Inductive
load (IEC/EN60947-5-1)
AC15: 240 VAC 2 A
DC13: 24 VDC 1.5 A
Minimum applicable load 24 VDC 4 mA
Conditional short-circuit current
100 A *6
Pollution degree 2
Over voltage category (IEC/EN60664-1) Safety output: Class III, the others: Class II
Isolation voltage (Ui) 250 VAC
Between input and
6 kV
Between different
poles of output
6 kV (between 13-14/23-24 and 33-34/43-44 (37-38/47-48))
4 kV (between 13-14 and 23-24, between 33-34 (37-38) and
43-44 (47-48))
Between input and
2,200 VDC
Between different
poles of output
1,500 VAC
Insulation resistance 100 MΩ
Vibration resistance *7 Frequency: 10 to 55 to 10 Hz
Amplitude: 0.35 mm half amplitude (0.7 mm double amplitude)
shock re-
sistance *7
Destruction 300 m/s2
Malfunction 100 m/s2
Surrounding Air Temperature -10 to 55°C (No freezing or condensation)
Ambient humidity 25% to 85%RH
Degree of protection IP20
Weight approx. 150 g approx. 180 g

*1 Power consumption of loads not included.
*2 The operating time is the time it takes for the safety contact to close after the safety inputs and feedback-reset input
      are turned ON. Not includes bounce time.
*3 This is in normal operation. When executing non-regular self-diagnosis for Safety output circuit, G9SE operating time
      become 500 ms max..
*4 The response time is the time it takes for the safety main contact to open after the safety input is turned OFF. Includes
*5 This is initial value using the voltage-drop method with 1A at 5VDC.
*6 Use for each contact output an 8A fuse that conforms to IEC 60127 as a short-circuit protection device. This fuse is not
      included with the G9SE.
*7 Condition: G9SE is mounted to mounting surface with screw and the screw mounting attachment. In the case of DIN
      rail mounting, mount DIN rail with G9SE to the place without big vibration. (Amplitude guideline: Less than 0.15 mm
      half amplitude (0.3 mm double amplitude))