Manual

Status and Error LEDs
The SyRen 10 and SyRen 25 have two indicator LEDs. The
green LED marked status is used to communicate various
information about the current state. Its operation depends
on the operating mode. For example, if a lithium battery
pack is selected, the status LED blinks the number of cells
detected. Unless you are in lithium mode, the status LED will usually remain off.
The Error LED illuminates if the SyRen has detected a problem. It will light if the driver has shut
down due to a depleted battery or due to overheating. If you are using a NiCd or NiMH battery,
and commanding an acceleration causes the motor to jerk and the Error LED to flash on and off,
the battery is depleted.
Mounting your SyRen
The SyRen is supplied with four mounting holes. These can
be used to attach it to your robot. The centers of the
mounting holes form a 1.05” x 2” rectangle. The holes are
.125 inches in diameter. The proper size screw is a 4-40
round head machine or wood screw. Four 1” long machine
screws and nuts are included.
If your robot or device is constructed from insulating
materials such as wood or plastic, it is advisable to use the
four included plastic standoffs to allow air to circulate. This
is shown in Figure 2.3
If your robot or device is constructed from metal, it is
usually better to attach the SyRen directly to the frame,
without standoffs. This will allow your frame to act as a
heat sink and will cause the SyRen to run cooler. This is
shown in Figure 2.4
Status LED on
Figure 2.3: Mounted to a wood
frame using standoffs
Figure 2.4: Mounted directly to a
metal frame