Bio-Rad BioFrac™ Fraction Collector User Manual
Page 95
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15-Pin D Connector
User Guide
| 87
Table 23.
15-Pin D connector output signals
Pin #
Output Signals
Type
Active
Wire Color
Description
4
READY
Level
Low
Green
Indicates that the fraction
collector diverter valve is
connected and functioning
properly.
9
10
START REMOTE
DEVICE
Relay
Closed
Green/Black
Orange/Black
Relay used for starting a
remote device such as a
pump. Relay is closed
when Run is pressed and
opened when Stop is
pressed. Active in Local
mode.
11
EVENT MARK
Pulse
Low
Blue/Black
Sends a negative pulse
(200 ms) for each fraction
advance. If the delay
function is being used, the
drophead advance will be
separated from the event
mark by the delay time,
volume, or drops.
15
SIGNAL
GROUND
Blue/White
Signal ground.
All input and output pins, except the relay terminals, are TTL compatible. All input pins are with
10 k
pull-up. The relay pins are used to control low-voltage DC contact-closure type devices,
such as 12 V, 10 mA.
Caution: Do not apply 110 VAC or 220 VAC directly to the relay terminal pins.