User`s manual

7-26
(4) Load which can be driven by the AC output module
The AC output module with SSR as an output device JW-213SA can drive directly the loads of
electro-magnetic switches, solenoid valves and lamps. In such cases note the surge current at
turning ON (from OFF to ON) and the maintenance current during the maintenance state (ON
state). Concretely, use the module within the following range:
When the AC output module drives the load, note the surge current at turning ON and the holding
current during the maintenance state. Keep the surge current below the repeated allowed surge
current at the turning ON; and keep the maintenance current, over the minimum action current and
below the maximum rated load current during the maintenance state.
The repeated allowable surge current is a value in case of the pulse width below 100 ms and
repeated switching frequency below 20 times/minute. When, in case of the load of a motor, the
pulse width of the surge current is large and that the switching frequency is high, keep the ON time
of 1 pulse below 50%.
(When the repeated surge current is below the maximum rated load current, there is no limit in the
pulse width or in the switching frequency.)
When many loads with big surge current are driven within a same common line circuit, make the
number of points, which turn from OFF to ON at the same time minimum. When a strong surge
current goes through a built-in fuse in a common unit, the built-in fuse may be damaged or fused.
The number of the surge current per common, which can be turned from OFF to ON at the same
time is determined by a fusing property of the built-in fuse as follows (as a guidance):
Below 10A (100ms)/JW-213SA, Below 7A (100ms)/JW-213SA
The numbers in ( ) are pulse widths.
For a light load of the holding current which is smaller than the minimum action current, some
characteristics of load may prevent turning OFF. In such a case, connect a bleeder resistance in
parallel with the load to increase the maintenance current up to the minimum action current or
more.
Some electro-magnetic switches of the pulse-driven cannot be turned OFF even if the holding
current is over the minimum action current. In such a case, also, connect a bleeder resistance in
parallel with the load. (Select a value of the bleeder resistance so that it can allow the minimum
action current by itself.)
R
L
Load
Output module
Power supply (V)
Bleeder resistance
At turning ON
Repeated allowable
surge current
6A (100 ms)
Minimum action
current
15 mA
Maximum rated load
current
1A/point, 2A/common
Model
JW-213SA
15 to 250 VAC
During maintenance state
Range of
Load Voltage