4–20 mA Lines – Cutsforth Support

The 4-20 mA outputs are an optional add-on and are not included in the standard Assurance package. If the 4-20 mA output package is purchased, the connection points will be located inside the Assurance Monitoring System enclosure and will be powered by the Assurance Monitoring System. Refer to your associated wiring diagram and the physical terminal labels to determine which signal pair is carried at each terminal connection point.

Shaft V RMS		Shaft V 0-Pk		Shaft V DC		Ground I RMS		Ground I 0-Pk		Ground I DC		Rope Status
BK	WH	BK	WH	BK	WH	BK	WH	BK	WH	BK	WH	BK	WH
+	-	+	-	+	-	+	-	+	-	+	-	+	-

DCS Programming: Interpreting Output Values

The 4–20mA outputs are intended to be used with a plant DCS. Refer to the following tables when programming.

Channel 0: Shaft Voltage RMS

Measurement Range: 0 to 70 V RMS
4–20 mA Scale: 1 mA = 4.375 V RMS

Shaft Voltage RMS (V)	4–20 mA Output
0	4
17.5	8
35	12
52.5	16
70	20

Channel 1: Shaft Voltage 0–Peak

Measurement Range: 0 to 100 V 0–Peak
4–20 mA Scale: 1 mA = 6.25 V 0–Peak

Shaft Voltage RMS (V)	4–20 mA Output
0	4
25	8
50	12
75	16
100	20

Channel 2: Shaft Voltage DC

Measurement Range: –15 to +15 V DC
4–20 mA Scale: 1 mA = 1.875 V DC

Shaft Voltage RMS (V)	4–20 mA Output
–15	4
–7.5	8
0	12
7.5	16
15	20

Channel 3: Ground Current RMS

Measurement Range: 0 to 15 A RMS
4–20 mA Scale: 1 mA = 0.9375 A RMS

Shaft Voltage RMS (V)	4–20 mA Output
0	4
3.75	8
7.5	12
11.25	16
15	20

Channel 4: Ground Current 0–Peak

Measurement Range: 0 to 20 A 0–Peak
4–20 mA Scale: 1 mA = 1.25 A 0–Peak

Shaft Voltage RMS (V)	4–20 mA Output
0	4
5	8
10	12
15	16
20	20

Channel 5: Ground Current DC

Measurement Range: –15 to +15 A DC
4–20 mA Scale: 1 mA = 1.875 A DC

Shaft Voltage RMS (V)	4–20 mA Output
–15	4
–7.5	8
0	12
7.5	16
15	20

Channel 6: Rope Status (Wear Indicator)

Rope Status	4–20 mA Output
No Rope Faults	4
Ground Rope Fault	12
Meter Rope Fault	16
Both Ropes Faulted	20

Was this article helpful?

0 out of 0 found this helpful

Articles in this section