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G9SX-LM

Low-speed Monitoring Unit

G9SX-LM

Low-speed Monitoring Function Ensures Safety for Maintenance Work

Ratings

Power input

Model G9SX-LM224-[] G9SX-EX401-[]
Rated supply voltage 24 VDC
Operating voltage range -15% to +10% of rated supply voltage
Power consumption * 5 W max. 2 W max.

* Power consumption of loads not included.

Inputs

Model G9SX-LM224-[]
Safety input
Enabling input
Feedback/reset input
Mode selector input
Operating voltage: 20.4 VDC to 26.4 VDC
Internal impedance: Approx. 2.8 kΩ *
Rotation detection input Operating voltage: 20.4 VDC to 26.4 VDC
Internal impedance: Approx. 2.8 kΩ *
Frequency input range: 1 kHz max.

* Provide a current equal to or higher than that of the minimum applicable load of the connected input control device.

Outputs

Model G9SX-LM224-[]
Safety instantaneous output *1 Source output (PNP compatible)
Load current: 0.8 A DC max. * 2
Safety speed detection output *1 Source output (PNP compatible)
Load current: 0.3 A DC max.
Auxiliary output Source output (PNP compatible)
Load current: 100 mA DC max.

*1. While safety instantaneous outputs and safety speed detection outputs are in the ON state, the following pulse signal
       is output continuously for output circuit diagnosis.
       When using these safety outputs as input signals to control devices (i.e. Programmable Controllers), consider the
       pulse signal shown below.

G9SX-LM Specifications 7

*2. The following derating is required when Units are mounted side-by-side.
       G9SX-LM[]: 0.4 A DC max. load current

Expansion Unit

Model G9SX-EX-[]
Rated load 250 VAC, 3A /30 VDC, 3A (resistive load)
Rated carry current 3A
Maximum switching voltage 250 VAC, 125 VDC

Characteristics

Model G9SX-LM224 G9SX-EX401
Over-voltage category
(IEC/EN60664-1)
II II (Safety relay outputs 13 to 43 and 14 to 44: III)
Operating time (OFF to ON state)
*1 *2 *5
50 ms max. (Safety input: ON, Enabling input: ON)
100 ms max. (Logical AND connection input: ON)
30 ms max. *6
Response time (ON to OFF state)
*1 *5
15 ms max. 10 ms max. *6
Allowable time for switching
Mode selector inputs *3
450 ms max. --
Mode selector input response
time *4
50 ms max. --
ON-state residual voltage 3.0 V max. (safety instantaneous outputs, safety speed detection outputs, and auxiliary outputs)
OFF-state leakage current 0.1 mA max. (safety instantaneous outputs, safety speed detection outputs, and auxiliary outputs)
Maximum cable length for logical
connection inputs and Safety
inputs
100 m max. (External connection impedance: 100 Ω max. and 10 nF max.)
Reset input time 100 ms min.
Accuracy tolerance of low speed
detection frequency
Within minus 10% of the set value --
Insulation
resistance
Between logical
AND connection
terminals, and power
supply input terminals
and other input and
output terminals
connected together
20 MΩ min., 250 VDC megger --
Between all terminals
connected together
and DIN rail
100 MΩ min., 500 VDC megger
Dielectric
strength
Between logical
AND connection
terminals, and power
supply input terminals
and other input and
output terminals
connected together
500 VAC for 1 min --
Between all terminals
connected together
and DIN rail
1,200 VAC for 1 min
Between different
poles of outputs
-- 1,200 VAC for 1 min
Between safety
relay outputs
connected together
and other terminals
connected together
2,200 VAC for 1 min
Vibration resistance Frequency: 10 to 55 to 10 Hz, 0.375-mm single amplitude (0.75-mm double amplitude)
Mechanical
shock
resistance
Destruction 300 m/s2
Malfunction 100 m/s2
Durability Electrical -- 100,000 cycles min. (rated load, switching
frequency: 1,800 cycles/hour)
Mechanical -- 5,000,000 cycles min.
(switching frequency: 7,200 cycles/hour)
Ambient temperature -10 to 55°C (no icing or condensation)
Ambient humidity 25 % to 85 %
Terminal tightening torque *7 0.6 Nm
Weight Approx. 240 g Approx. 165 g

*1. When two or more Units are connected by logical AND, the operating time and response time are the sum total of the
       operating times and response times, respectively, of all the Units connected by logical AND.
*2. Represents the time required to turn ON safety instantaneous outputs when required conditions are met.
*3. Represents the time allowed for switching mode selector inputs. If it exceeds 450 ms, G9SX-LM[] will detect it as az
       failure.
*4. Represents the time required for safety inputs/enabling inputs to be switched following a switch of mode selector
        inputs.
*5. Operating time and response time do not include the frequency detection time and the time affected by the
       characteristics of proximity sensors.
       For response performance of the entire system, see "Response performance regarding speed detection".

G9SX-LM Specifications 11

*6. The value of the operating time and response time of the connected Low-speed Monitoring Unit is not included.
*7. For the G9SX-[]-RT (with screw terminals)

Logical AND Connection

Model G9SX-LM224 G9SX-EX401-[]
Number of Units connected per logical AND output 4 units max. --
Total number of Units connected by logical AND * 20 units max. --
Number of Units connected in series by logical AND 5 units max. --
Max. number of Expansion Units connected -- 5 units max.
Maximum cable length for logical AND input 100 m max. --

* The number of G9SX-EX401-[] Expansion Units not included.