Emerson ROC827 instruction manual Volt dc Auxiliary Power Wiring, Other Equipment

ROC827 Instruction Manual

For the 24 volt Power Input module (PM-24), the AUX voltage is always 12 Volts dc minus ~0.7 Volts. AUX+ / AUX– is internally current-limited by a 0.5 Amp Positive Temperature Coefficient (PTC).

If you need to cycle power to the radio or other device to reduce the load on the power source (a recommended practice when using batteries), use a Discrete Output (DO) module to switch power on and off. Refer to the ROCLINK 800 Configuration Software User Manual (Form A6121).

Power Supply				Other Equipment
Terminal Block
AUXsw			AUX	2.5 Amps Maximum
				Current On. Non-switched
–	+	–	+
				–
				2 Amp or less
				Fast ActingFuse
					Other Equipment
				–	14.5 Volts DC Maximum @ 0.5 Amps
					Switched Power

809AUX.DSF

Figure 3-3. 12 Volt dc Auxiliary Power Wiring

Power Supply		Other Equipment
Terminal Block
		12 Volts DC Maximum @ 0.5 Amps
AUX
		Current-Limited Always On
–	+
		–
		0.5 Amp or less
		Fast Acting Fuse
		809AUX24.DSF

Figure 3-4. 24 Volt dc Auxiliary Power Wiring

Removing the To remove the auxiliary output fuse:

Auxiliary Output Fuse

1.Perform the procedure described in Section 3.3, “Removing a Power Input Module.”

2.Remove the fuse located at F1 on the Power Input module.

Installing the Auxiliary To re-install the auxiliary output fuse:

Output Fuse

1.Replace the fuse located at F1 on the Power Input module.

2.Perform the procedure described in Section 3.4, “Installing a Power Input Module.”

Issued Mar-06 Power Connections 3-5