RMI-Q installation guide
2.4
RMI-Q basics
RMI-Q inputs
Machine start inputs (P1, P2, P3, P4):
'Machine start' inputs are configurable as a level
or pulsed signal.
Level
10 to 30 V (2.4 mA at 24 V)
When input is active, probe is
switched on.
Pulsed
12 to 30 V (10 mA at 24 V)
Probe toggles from being switched on/
off. The minimum pulse width is 10 ms.
P1 machine start wires (white +ve and brown -ve).
P2 machine start wires (pink +ve and brown -ve).
P3 machine start wires
(white/red +ve and brown -ve).
P4 machine start wires
(white/blue +ve and brown -ve).
RMI-Q outputs
There are five outputs:
•
Probe status 1 (SSR).
•
Probe status 2a
(5 V isolated driven skip).
•
Probe status 2b
(driven at power supply voltage).
•
Error (SSR).
•
Low battery (SSR).
All outputs can be inverted by using switches SW1
and SW2 - see page 2.8 'Switches SW1 and
SW2'.
Probe status 1, Error, Low battery (SSR):
•
‘On’ resistance = 50 ohm max.
•
Load voltage = 40 V max.
•
Load current = 100 mA max.
Probe status 2a (5 V isolated driven skip):
•
Load current = 50 mA max.
Output voltages
•
Sourcing = 4.2 V min at 10 mA.
= 2.2 V min at 50 mA.
•
Sinking = 0.4 V max at 10 mA.
= 1.3 V max at 50 mA.
Probe status 2b (driven at power supply
voltage):
•
Load current = 50 mA max.
Output voltages
•
Sourcing voltage drop
= 2.6 V max at 10 mA.
= 3.5 V max at 50 mA.
•
Sinking voltage drop
= 2.0 V max at 10 mA.
= 2.9 V max at 50 mA.
The 'LOW BATTERY/START', 'PROBE STATUS',
'ERROR' and 'SIGNAL' LEDs will start flashing
red when an output overload has occurred. All
outputs will be switched off. If this occurs, turn off
the power supply and remove the source of the
problem. Turning on the power supply will reset
the RMI-Q.
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