7 DS210 Inputs
The DS210 is equipped with two inputs, capable of emulating either PNP or NPN, according to the setting
of switch 3 (see section 5 Table 5.1). External switches will need to be momentary. If a PLC is tied to the
inputs note that inputs must go from inactive to active, and back to inactive after 100-500msec.
•External Calibration: When active, behaves the same as pressing the Calibration Button (See
section 9 on calibration).
•Reset: When enabled (Option Switch 5 is OFF) and active, resets a latched Double condition
(NO-DOUBLE Output and DOUBLE LED). Reset Input also resets a latched Not Ready or Error
Condition. If held continuously active, the DS210 will behave as if Option Switch 5 is ON. The
Reset Input can also be used to exit a failed or erroneously started calibration routine (regardless
of dip switch 5 setting).
8 DS210 Outputs
The DS210 has three outputs, capable of emulating either PNP or NPN, according to the setting of Switch
3 (see Section 5 Table 5.1). The functions of these outputs are described below and in detail in Table 8.1.
•METAL: When active (on), indicates that the proximity sensor in the probe senses metal. Note
that this sensor will respond to any metallic presence. The DS210 can only sense ferrous metals.
•NO-DOUBLE: This output is active (on) whenever the DS210 has sensed a NO-DOUBLE
condition and is inactive (off) when a DOUBLE condition is sensed. This is done in order to provide
a fail-safe stop (if connection or power is lost to the DS210). Also, this output is inactive at power
up, during Not Ready” conditions (such as initialization and calibrations), and Error conditions. The
behavior of this output depends on the setting of Switch 5 (see Section 5).
oIf switch 5 is OFF, and a double metal is sensed, the NO-DOUBLE output latches in the
inactive (off) state, and must be reset by the Reset Input. In this switch option, NO-
DOUBLE must also be reset after power up, calibrations, and after the occurrence of an
error condition.
oIf switch 5 is ON, and a double metal is sensed, the NO-DOUBLE output will become
inactive until the next condition which is not a double (either a single, under, or no metal)
is seen. The DOUBLE output will also switch from inactive to active after initialization or
calibration is finished, or an error condition is cleared without a reset input.
•UNDER/GOOD: The UNDER output has two different behaviors, depending of the setting of
Switch 4 (see Section 5).
oIf Switch 4 is OFF: The UNDER output becomes active (on) when a sample has been
sensed which is thinner than the “under” threshold, but thicker than no metal. The under
output will also become active during a “not ready” condition (such as calibration) or error
condition.
oIf Switch 4 is ON: The UNDER output becomes active when a sample has been sensed
that is between the “under” threshold and the “double” threshold. Thus the UNDER output
becomes a sample GOOD output with this option switch. Note that with Switch 4 On, this
output will be active (on) ONLY when a good metal sample is sensed.
When the DS210 is not ready to measure metal or when an error condition occurs, the outputs will report
an “invalid” (in regard to metal measurement) output condition of the NO-DOUBLE output being inactive
(off) and the UNDER output being active (on). This offers a stop signal different from the normal double
thickness detect of the NO-DOUBLE output going inactive (off) and can be interpreted as such by a PLC.
If Switch 4 is On (UNDER is a GOOD output) this feature is not available.
