Electrical Interface; Table 1. Connector Pin Description; Table 2. Input Power Specifications - Honeywell HG4930 Installation And Interface Manual

HG4930 Installation and Interface Manual

Electrical Interface

The pin assignments of the external system connector are shown below. Logic 0 corresponds
to the CMOS "low" logic state. Logic 1 corresponds to the CMOS "high" logic state.

Table 1. Connector Pin Description

PIN # SIGNAL NAME
1 DGND
2 +5VDC
3 No Connect
4 No Connect
5 No Connect
RESET
6
7 No Connect
8 No Connect
9 SER_DATA_OUT_H
10 SER_DATA_OUT_L
DATA_SYNC_OUT_H
11
12 DATA_SYNC_OUT_L
13 No Connect
14 No Connect

Table 2. Input Power Specifications

VOLTAGE
(VDC)
+5
The 5V power application to the IMU must monotonically increase from 1 to 5 volts for proper IMU
start-up. The maximum current shown in Table 2 does not include in-rush current.
Figure 1 provides representative voltage and current plots at hot and cold for a ~ 2ms start time.
Worse case steady state current shown is ~500 mA (cold) and peak current shown is ~800 mA.
Unit typically draws < 400 mA in normal operation.
Figure 1. Typical Cold (Left Figure) and Hot Voltage/In-Rush Plots
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INPUT/OUTPUT & SIGNAL TYPE
Ground
Input
Input
CMOS Compatible Logic
Output RS-422
Output RS-422
Output RS-422
Output RS-422
TOLERANCE MAX RIPPLE
(MV P-P)
±5% 50
SIGNAL FUNCTION
Digital Power and Signal Return
+ 5 VDC Power – See Table 2
Logic 1 applied for 7 milli-seconds will stop all
processing. Upon logic 0, the IMU will restart as if
power had been removed. No connection is required
(active pull down to logic 0).
Asynchronous High
Asynchronous Low
Data Sync High
Data Sync Low
MAX RUN CURRENT MAX CURRENT
(AMP)
1.0
5
(MA)
700